Your Trusted Waterproof Synthetic Roof Tiles Manufacturers
Waterproof Synthetic Roof Tiles Manufacturers
At Duolong Trade, we specialize in manufacturing a wide range of export-grade waterproof synthetic roof tiles for industrial, residential, and infrastructure use. With over 10 years of experience serving B2B buyers across Southeast Asia, the Middle East, and Africa, we supply building material wholesalers, cross-border importers, construction contractors, and project-based procurement teams with dependable and cost-effective roofing solutions. Our product portfolio is engineered to meet the demands of harsh climates, government building standards, and fast-paced construction schedules. We offer multiple waterproof synthetic roof tile product lines, each designed for different applications and climate needs. These include ASA coated synthetic resin roof tiles for coastal and high-humidity projects, Spanish barrel-style resin tiles for Mediterranean aesthetics in villas and resorts, synthetic slate composite roof tiles for lightweight and durable performance in residential and government projects, corrugated PVC roof sheets for commercial sheds and efficient water drainage, and flat PVC roofing panels for warehouse and factory coverage in modern designs. All models come with optional accessories such as ridge caps, trims, and waterproof sealing components for complete installation. Duolong’s waterproof synthetic roof tiles are manufactured in our ISO 9001:2015-certified factory using automated extrusion and ASA co-extrusion technology to ensure color consistency, high tensile strength, and impact resistance. We implement strict dimensional and surface quality controls, and our tiles comply with CE, SGS, and region-specific certifications, covering UV resistance, load-bearing performance, waterproofing, and flame retardance. Every batch is tested for profile accuracy, material thickness, and heat distortion thresholds to meet international export requirements. To support global procurement workflows, Duolong offers flexible shipment solutions including mixed-model loading, short lead times, and custom carton packaging. For cross-border or government-related tenders, we supply all export documentation such as technical spec sheets, quality inspection reports, HS code declarations, and packing lists. OEM and private label manufacturing is fully supported with options for logo embossing, custom color palettes, and project-specific dimensions. Working with Duolong Trade means partnering with a manufacturer that understands the operational complexity behind high-volume sourcing, multi-country distribution, and compliance-driven purchasing. We help our clients maintain project schedules, manage inventory cycles, and improve cost control with a stable supply of certified waterproof synthetic roof tiles at factory-direct prices. Whether you are building public schools, managing regional wholesale supply, or importing for private label retail, Duolong delivers on performance, consistency, and long-term reliability.
ASA Coated Synthetic Resin Corrugated Roofing Sheets
Synthetic Slate Composite Tiles
Spanish Barrel-Style Resin Tiles
Synthetic Cedar Shake Tiles
Why Choose Us
Complete In-House Production
Duolong Trade controls the entire manufacturing process of our waterproof synthetic roof tiles—from PVC resin formulation, ASA or synthetic resin surface coating, to precision extrusion, curing, and final packaging. All production is completed in-house under ISO 9001:2015-certified quality management systems, ensuring consistent dimensions, vibrant color retention, and accurate profiles for both standard and customized orders.
Weather-Resistant Materials
Our waterproof synthetic roof tiles are engineered for durability in high-UV, high-humidity, and salt-air environments. Whether you choose ASA-coated corrugated sheets, Spanish barrel-style resin tiles, synthetic slate composite panels, or flat PVC roof boards, every product undergoes stringent testing for water tightness, UV resistance, and structural performance. These tiles are proven in demanding climates across Southeast Asia, the Middle East, and Africa.
Profile and Color Customization
We offer a comprehensive range of waterproof roof tile types including synthetic resin Roman-style tiles, ASA corrugated roof sheets, hollow heat-insulated panels, and modern flat PVC roof tiles. All models can be customized by length, wave profile, thickness, and RAL color palette. OEM and private label options include logo embossing, custom packaging, and barcode-ready palletization for wholesale distributors and retail buyers.
Efficient Export Logistics
Each shipment is secured with shrink wrap, edge guards, and moisture-proof barriers to maintain product integrity during transit. We support full container load (FCL) and less-than-container load (LCL) shipments, with clearly labeled cartons and precise HS code documentation for smooth customs clearance at major ports including Manila, Lagos, and Jakarta. Standard production lead time is 10–14 working days, with expedited options available for urgent projects.
Straightforward Installation Tools
Every order is supplied with detailed installation guidelines, covering overlap specifications, fastener placement, and purlin spacing to ensure proper waterproof performance. For contractors and bulk buyers, we also provide printed manuals and digital guides to streamline labor processes and improve on-site efficiency for large-scale installations.
Certifications and Testing
Our waterproof synthetic roof tiles are backed by CE, SGS, and ISO certifications and are tested for UV stability, water penetration resistance, impact strength, and thermal deformation limits. Each export shipment includes technical specification sheets, MSDS files, and inspection reports to meet the regulatory requirements of public sector tenders and private infrastructure projects.
Your Ideal Choice
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Proven in Global Construction
Duolong’s waterproof synthetic roof tiles have been trusted by importers and construction buyers in UV-intensive, high-humidity, and salt-laden coastal environments. Our ASA coated synthetic resin roof tiles, Spanish barrel-style resin panels, and insulated hollow roofing sheets have been successfully installed on solar-powered logistics centers in Indonesia, community housing projects in Ghana, and school renovation works in Vietnam. With a waterproof core and anti-fade ASA surface layer, these tiles retain their structural strength and vibrant color even under prolonged tropical exposure. -
Tailored Roof Tile Categories
We offer a complete range of waterproof synthetic roofing solutions for infrastructure and commercial developments: ASA corrugated PVC roof sheets for warehouse sheds and drainage-intensive designs, Roman-style synthetic resin tiles for civic buildings and visually appealing structures, flat PVC roofing panels for factories and modern architectural use, and hollow heat-insulated tiles for regions requiring thermal protection. All profiles are engineered to fit standard structural frameworks used by distributors and contractors throughout Southeast Asia, Africa, and the Middle East. -
OEM Support for Distributors
Duolong supports private label production and bulk wholesale supply with services including RAL color customization, packaging design, logo embossing, profile adjustments, and barcoded pallet preparation. Whether supplying 2.5 mm flat waterproof PVC roof sheets for retail programs or high-impact resistant synthetic roof tiles for public infrastructure bids, our team ensures each order aligns with local sizing norms and resale requirements.
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Certified Manufacturing Practice
All waterproof synthetic roof tiles are manufactured in-house under ISO 9001:2015 quality systems and verified through CE and SGS testing protocols. We utilize recyclable PVC and environmentally compliant ASA resin to meet global construction standards and sustainability codes, supporting eligibility for public tenders, government housing initiatives, and regulated commercial procurement projects. -
Transport-Safe and Labor-Saving
Every order is pallet-packed with anti-slip layers, moisture-resistant wrap, and reinforced edge boards to protect tiles during long-haul shipping. Product profiles are designed for quick overlapping, correct fastener placement, and seamless purlin alignment, enabling efficient installation by local construction crews and reducing on-site labor time during peak building seasons. -
Supply Confidence for Large Orders
With consistent stock across our core waterproof synthetic roof tile product lines, Duolong ensures flexible shipment options including split loads, rolling delivery schedules, and monthly replenishment plans. Whether supplying materials for national housing schemes or supporting wholesale distribution programs, we maintain production stability, order tracking transparency, and just-in-time delivery for smooth global fulfillment.
FAQ Questions and Answers
Duolong produces a comprehensive range of waterproof synthetic roof tiles designed for export and large-scale projects. Our product portfolio includes ASA coated synthetic resin roof tiles for high UV and humid regions, Spanish barrel-style resin tiles for decorative and civic projects, synthetic slate composite roof panels for residential and government use, and flat PVC roofing sheets for warehouses and modern factory installations. Standard profiles include 840mm, 880mm, and 1050mm widths, with thicknesses ranging from 1.5mm to 3.0mm to suit various structural frameworks.
Yes. All roof tiles are manufactured in our ISO 9001:2015-certified factory and meet CE, SGS, and regional certification standards such as SONCAP (Nigeria), SIRIM (Malaysia), and QCVN (Vietnam). We provide complete export documentation including Certificates of Origin, MSDS files, weather and fire performance test reports, and third-party inspection results to support compliance with infrastructure tenders and regulated markets.
Our waterproof synthetic roof tiles are engineered to perform reliably in harsh conditions. The ASA resin surface layer protects against UV degradation, salt corrosion, and color fading, while the durable PVC or resin core ensures impact resistance and structural stability. Duolong tiles have been successfully installed in poultry farms in Indonesia, public schools in Kenya, and coastal housing developments in the Philippines with excellent long-term results.
Yes. Duolong supports OEM and private label production across all waterproof synthetic roof tile categories. Customization options include Pantone color matching, embossed branding, tailored lengths and profiles, and retail-ready packaging with barcodes. Whether sourcing ASA corrugated roof sheets for wholesale supply or Roman-style resin tiles for municipal contracts, we align manufacturing with your market requirements.
Our standard lead time is 10–15 working days for regular orders and 15–20 days for customized specifications. Popular formats like ASA resin roof tiles and trapezoidal PVC sheets are often stocked for faster turnaround. Shipments depart from Qingdao, Ningbo, or Shanghai ports, packed with moisture-resistant films, reinforced edge guards, and stretch-wrapped pallets to ensure safe international delivery.
Absolutely. Duolong’s waterproof synthetic roofing materials are widely used in public sector projects including schools, health clinics, community centers, and housing initiatives. We provide technical documentation such as wind uplift resistance reports, fire retardancy certificates, and detailed installation guides to support government tenders and institutional procurement processes.
We supply a full set of export documents including commercial invoices, packing lists, bills of lading, Certificates of Origin, and SGS or third-party inspection reports as requested. For clients managing multi-destination shipments or split orders, we provide customized container loading plans, LCL/FCL coordination, and pre-shipment photo verification of palletized loads.
Duolong maintains a monthly production capacity of over 400,000 square meters, covering ASA coated resin roof tiles, synthetic slate panels, hollow insulated PVC sheets, and flat waterproof roofing boards. We accommodate rolling delivery contracts, phased shipment schedules, and multi-port distribution programs to meet the needs of high-volume buyers.
Compared to metal roofing sheets, our ASA PVC and synthetic resin tiles are lighter, quieter in heavy rain, and resistant to rust and corrosion. They outperform clay tiles in terms of impact resistance, ease of installation, and moisture protection. For fast-track construction and humid environments, Duolong’s waterproof synthetic roof tiles provide superior UV stability, thermal comfort, and design flexibility.
Yes. Duolong provides physical samples of waterproof synthetic roof tiles including ASA corrugated sheets, Roman profiles, color swatches, and accessory pieces. Along with samples, we supply technical specification sheets, performance test reports, and installation instructions. Samples are dispatched via international express within 3–5 working days to support buyer approvals and tender submissions.
Shipping & Logistics
We ensure seamless delivery of your goods worldwide
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Order Confirmation
With your approval of the design and specifications, we proceed to confirm the order and prepare for mass production. This step ensures your final approval of the product. -
Mass Production
The manufacturing process typically lasts about 30 days, depending on the complexity and volume of the order. We maintain strict adherence to quality standards. -
Shipping
Following production, we manage the logistics of shipping your order. Shipping times vary depending on the selected method -
Goods Received
Once your tiles and building materials arrive, they are ready for distribution and immediate use, fully incorporating all specified customizations and branding as agreed upon. We remain flexible to accommodate any unforeseen circumstances, ensuring a smooth process from delivery to application.
Your Trusted Waterproof Synthetic Roof Tiles Manufacturers
Table of Contents
Bulk Pricing Advantages for Waterproof Synthetic Roof Tile Buyers
Stable Price Offers for High-Volume Sourcing Duolong offers structured pricing models designed for building material wholesalers, government infrastructure suppliers, and cross-border importers managing container-based or phased procurement. Our pricing system for waterproof synthetic roof tiles, ASA-coated resin roof sheets, Spanish barrel-style resin tiles, and synthetic slate panels remains stable against short-term raw material cost fluctuations, allowing buyers to achieve precise budget planning, align tender submissions, and manage overall costs across multi-shipment delivery schedules.
Standardized Product Range for Efficient Quoting We prepare quotations based on a fixed specification set—including 840mm ASA corrugated roof sheets, 1050mm trapezoidal waterproof PVC panels, and 880mm Roman profile synthetic resin roof tiles. Available in thickness grades from 2.0mm to 3.0mm, all formats are CE-certified and tested for export. This structure enables rapid response to RFQs, minimizes errors in reorders, and supports volume-tier discounts applied uniformly across repeat construction projects.
Forward Price Commitments for Government Projects For public sector procurement teams engaged in school renovations, affordable housing schemes, or rural healthcare roofing, Duolong provides forward pricing contracts valid for 60–120 days. These agreements ensure your BOQ submissions and municipal approvals are supported by guaranteed per-square-meter costs, helping you avoid unexpected re-quotes and maintain alignment with fiscal-year spending cycles.
Optimized Container Loading to Lower Freight Cost per Unit Our export logistics team optimizes container utilization for waterproof synthetic roof tile shipments by standardizing stacking patterns, grouping colors, and maximizing pallet heights across ASA roof tiles, synthetic resin Roman profiles, and hollow heat-insulated PVC boards. This approach reduces wasted space in 20GP/40HC containers, prevents in-transit vibration or edge damage, and lowers the landed cost per square meter. We support EXW, FOB, and CIF terms and provide full export documentation including packing lists, HS codes, CE/SGS test reports, and Certificates of Origin.
Production Lead Matching for Phased Construction Supply Duolong aligns production cycles with phased rollout strategies, whether delivering ASA-coated trapezoidal roof panels to housing projects in Mombasa or scheduling monthly shipments of Spanish barrel-style resin roof tiles to Southeast Asia logistics hubs. Pre-booked production slots ensure color consistency and timely dispatch through key ports such as Port Klang, Jebel Ali, and Ho Chi Minh City. Each shipment includes batch tracking, pallet tagging, and moisture-resistant export packing as standard.
A Cost Structure Designed for Operational Reliability At Duolong, our pricing framework is engineered to support real-world project execution—not just single-order fulfillment. Buyers receive scalable, predictable, and technically supported pricing terms for all waterproof synthetic roof tile types, including ASA corrugated sheets, Roman-style resin panels, flat PVC roofing boards, and insulated hollow profiles. Every quotation comes with delivery planning, dimensional accuracy assurance, and compliance documentation to meet both government tenders and cross-border distribution requirements.
Consistent Product Specifications for Waterproof Synthetic Roof Tile Orders
Fixed Mold Profiles Ensure Uniform Fitment Across Projects Duolong manufactures waterproof synthetic roof tiles using precision-engineered extrusion tooling and calibrated die profiles across all standard formats, including 840mm ASA-coated corrugated roof sheets, 1050mm trapezoidal PVC panels, and 880mm Roman-style synthetic resin tiles. Each design is extruded to exact pitch, thickness, and crest specifications—ensuring repeatable fitment without field modifications. For contractors and distributors supplying phased school roofing, logistics warehouse zones, or public health facilities, this guarantees no resizing on-site, no panel mismatch, and a consistent installation layout.
Color Batch Matching Maintains Visual Uniformity Our advanced ASA co-extrusion systems use digitally controlled pigment blending to maintain consistent color tones across production batches. Popular regional shades such as terracotta red, deep grey, and ocean blue are produced with minimal variation between weeks or container shipments. Whether installing Roman tiles on government housing developments or corrugated panels on market pavilions, visual uniformity is preserved across multiple roofs and project phases.
Traceable Palletization Improves Warehouse Flow and Customs Handling Each batch of waterproof synthetic roof tiles is pallet-packed with detailed labeling, including profile ID, production date, thickness grade, and color code. This traceability streamlines customs clearance, bonded warehouse operations, and multi-location stock management. For importers handling mixed-format orders and distributors servicing provincial networks, it ensures smoother supply flow and accurate regional order fulfillment.
Material Inputs Verified for Structural and UV Performance Duolong’s waterproof synthetic roof tiles are manufactured from virgin-grade PVC granules blended with ASA coatings and enhanced with fire-retardant and anti-aging agents. Inline scanners monitor tile thickness, wave consistency, and ASA bonding integrity during extrusion to prevent warping, distortion, or deformed edges. These measures meet the requirements of infrastructure buyers demanding warranties, quality inspection approvals, and compliance with residential and institutional building codes.
Standard Specs for Fast Quoting and Reordering We operate with a locked catalog of technical specifications. Buyers sourcing ASA-coated corrugated roof sheets or trapezoidal waterproof PVC panels can request quotations by profile code, ensuring accurate pricing and seamless reordering. This approach benefits clients managing government infrastructure projects, national school roofing programs, and long-term retail distribution agreements.
Certified Manufacturing for Tender and Compliance Submission All waterproof synthetic roof tiles are produced under ISO 9001:2015 quality systems and certified through CE and SGS third-party testing. Certifications cover UV resistance, structural load capacity, thermal stability, and weather cycle endurance. Complete documentation—including technical specification sheets, performance test reports, MSDS files, and inspection certifications—is prepared for tender applications, public procurement bids, and municipal compliance submissions.
Installation Efficiency from Batch-to-Batch Consistency Each production run maintains strict dimensional consistency, edge uniformity, and thickness control. Contractors can rely on quick alignment, error-free overlaps, and reduced labor time. For B2B buyers coordinating multi-site construction or staggered delivery rollouts, Duolong’s manufacturing repeatability ensures smoother installation, lower workforce costs, and reduced project delays for government, industrial, and institutional roofing projects.
Long-Term Partnership Support for Waterproof Synthetic Roof Tile Supply
Structured Supply Chains for Repeat Orders and Regional Distribution Duolong supports high-frequency buyers with an export model built for long-term stability. Whether you are managing waterproof synthetic roof tile distribution to inland warehouses or coordinating phased shipments of ASA-coated PVC roof tiles and Roman-profile synthetic resin panels to government-funded job sites, our production schedules are aligned with your recurring delivery needs. We plan order batching and container loading to match contractor execution timelines and multi-phase project rollouts across Southeast Asia, Africa, and the Middle East.
Reserved Output for High-Turnover Roof Tile Specifications We provide fixed-capacity reservations and forward pricing agreements for core waterproof roof tile formats, including 840mm ASA corrugated roof sheets, 1050mm trapezoidal ASA-PVC tiles, and custom-length dual-layer composite roofing boards. These terms minimize the impact of raw material cost fluctuations and allow procurement teams to plan stable budgets for public infrastructure projects, regional distribution programs, and long-term export contracts.
Dedicated Export Coordination Across All Delivery Stages Each long-term client works with a dedicated export coordinator who manages quotation cycles, certification collation, documentation preparation, and container dispatch planning. From CE certification assembly and SGS test report management to pallet barcode labeling and port-based shipment tracking, our team ensures your waterproof synthetic roof tiles move seamlessly through customs and into regional stock or active construction sites without delay.
Production Aligned to Fiscal-Year Procurement Schedules We understand the operational rhythms of institutional buyers working under annual budgets and public tender cycles. Duolong’s manufacturing plans accommodate tender result timelines, budget approvals, and forecasted site commencement dates to ensure ASA-coated waterproof roof tile stock is available exactly when required. Advance PVC resin allocation, extrusion die holdovers, and pre-marked inventory reserves support consistent deployment during high-demand procurement periods.
Export Logistics Designed for Multi-Market Dispatch Efficiency For cross-border importers servicing multiple countries or regional distribution hubs, we offer optimized stacking patterns, mixed-SKU pallet configurations, and container separation schemes based on product type and order volume. Whether delivering to bonded warehouses in East Africa or arranging drop-shipment to Southeast Asian port zones, Duolong supports route-specific coordination for cost efficiency and customs clearance optimization.
Exclusive Access to Technical Upgrades and New Roofing Profiles Our long-term clients enjoy priority access to next-generation waterproof synthetic roof tile models, including heat-reflective ASA PVC panels, ultra-thick profiles for industrial roofing, and redesigned Roman-style resin tiles for public architecture projects. We provide technical specification sheets, cross-section samples, and product testing kits to support in-country product registration, architectural presentations, and government approval submissions.
Consistency and Certification for Public and Professional Buyers Partnering with Duolong means gaining a true production partner—not just a supplier. All ASA-coated PVC roof tiles and synthetic resin roofing materials are manufactured under ISO 9001:2015 quality systems, verified through SGS testing, and accompanied by CE certifications. Batch traceability, color uniformity, and mold-specific profile accuracy are maintained across every shipment. Whether fulfilling national housing schemes, multi-year public works contracts, or regional wholesale distribution agreements, Duolong provides the manufacturing consistency and reliability that B2B buyers depend on.
How Waterproof Synthetic Roof Tiles Help Reduce Construction Costs
Lightweight Roof Tiles Reduce Steel and Concrete Use Compared to traditional concrete roofing or clay tiles, Duolong’s ASA-coated waterproof synthetic roof tiles are significantly lighter—ideal for low-rise government housing, logistics warehouses, and agricultural sheds. The reduced weight lowers structural loads, enabling engineers to design lighter steel trusses and smaller foundation pads. On average, clients report a 15–25% reduction in steel reinforcement and support framework costs when switching to ASA corrugated roof sheets or trapezoidal PVC roofing panels.
Durable Surface Reduces Maintenance and Replacement Costs Each waterproof synthetic roof tile is built with a UV-resistant ASA surface layer and a flexible PVC or resin base, providing excellent resistance to corrosion, cracking, and warping. In regions with high humidity, salt air, or intense tropical sunlight, Duolong’s ASA PVC roof panels outperform metal and ceramic alternatives—eliminating the need for anti-rust coatings, frequent repainting, or premature re-roofing. This is especially valuable for schools, clinics, and storage facilities in coastal or inland tropical environments.
Standard Profiles Save Time and Labor During Installation Duolong manufactures all waterproof roof tile profiles—including 840mm ASA corrugated sheets, 1050mm trapezoidal PVC panels, and 880mm Roman-style synthetic resin tiles—using fixed-profile molds with consistent wave pitch, edge alignment, and overlap spacing. These features enable faster roof layout, reduce the need for on-site adjustments, and improve fitment predictability. Contractors working on public tenders or phased housing developments have reported up to a 30% reduction in installation time compared to traditional roofing materials.
Protective Packaging Reduces Tile Damage and Material Waste Each shipment of waterproof synthetic roof tiles is packed with moisture-resistant wrap, reinforced corners, and high-stability pallets to minimize transport damage. Unlike fragile ceramic or fiber cement tiles, Duolong’s PVC and resin roof tiles flex during handling and resist cracking under transit vibrations. This results in fewer breakages, reduced reordering needs, and fewer project delays, especially for remote job sites or multi-country delivery chains.
Thermal and Acoustic Benefits Improve Operational Efficiency The ASA-PVC composite structure of Duolong’s waterproof synthetic roof tiles offers natural thermal insulation and sound dampening properties. On school roofs, livestock facilities, and public markets, this reduces the need for additional insulation or ventilation systems—cutting energy use for air conditioning and improving occupant comfort. Over the building’s lifespan, these advantages translate to measurable savings on electricity costs and maintenance overhead.
Cost-Efficient from Production to Project Completion Every aspect of Duolong’s waterproof synthetic roof tile system is engineered for lifecycle cost savings—from precision factory extrusion to optimized container loading. Contractors benefit from lighter structural requirements, reduced labor costs, and minimal post-installation care, while importers enjoy high packing density and reduced claims from transport damage. Whether supplying Roman tiles for civic housing or ASA corrugated panels for large-scale warehouse construction, Duolong helps clients achieve lower cost per square meter without compromising on quality or delivery timelines.
Ensuring Smooth Customs Clearance and Compliance
Export-Compliant Shipments for International Waterproof Synthetic Roof Tile Buyers Duolong delivers export-ready shipments of waterproof synthetic roof tiles and ASA-coated PVC roofing panels to buyers across Africa, Southeast Asia, and the Middle East. Whether supplying Spanish barrel-style resin roof tiles to municipal housing initiatives or corrugated ASA PVC panels to bonded warehouses, every shipment is packed, labeled, and documented in strict accordance with destination-specific customs protocols—minimizing clearance delays and import risks for both public sector and commercial buyers.
Country-Specific Documentation Prepared in Advance Each shipment includes a tailored documentation package designed to satisfy the requirements of your local import authorities. We provide HS-coded commercial invoices, detailed packing lists, CE certificates, Certificates of Origin, and MSDS files covering PVC and ASA material compositions. Documentation formats are pre-validated for smooth entry at major ports such as Dar es Salaam, Hai Phong, Jebel Ali, and Mombasa, ensuring faster customs processing and simplifying internal compliance reviews for importers.
SGS and CE Certification for Public-Sector Tenders All Duolong waterproof synthetic roof tiles are manufactured under ISO 9001:2015 systems and verified by third-party testing bodies including SGS and CE. Certifications confirm key performance attributes such as structural strength, flame resistance, UV durability, and thermal stability—meeting essential standards for infrastructure tenders, NGO procurement contracts, and government approvals for imported roofing systems.
Pre-Loading Inspection Ensures Port Compliance Before container loading, every batch of waterproof synthetic roof tiles is checked for quantity, thickness consistency, width accuracy, and surface color uniformity. Reinforced packaging with barcoded pallet labels supports customs compliance and accelerates container inspections at ports of discharge. Buyers managing full-container loads (FCL) or split shipments across multiple destinations benefit from reduced risks of customs holds and minimized exposure to fines for misdeclared cargo.
Special Documentation for Donor-Funded and Municipal Projects For government buyers and humanitarian organizations, Duolong provides full technical documentation including flame retardancy test reports, VOC emissions statements, recyclable material declarations, and environmental safety certifications. All documents are available in English, French, Arabic, and Vietnamese to meet multilingual compliance needs for international school construction, housing tenders, and refugee camp infrastructure support.
Certified Export Channels and Port-Synchronized Loading Duolong ships under EXW, FOB, or CIF terms via Ningbo, Qingdao, and Shanghai using bonded logistics channels and trusted construction-grade customs brokers. Our export team oversees container scheduling, loading order optimization, and port-specific documentation handover to ensure waterproof synthetic roof tiles arrive within your project delivery window.
Ongoing Visibility Through Document Access and Tracking We provide buyers with real-time shipment tracking, updated shipping schedules, and customs clearance status notifications throughout the export process. Clients receive a digital documentation folder containing scanned copies of all export files to help procurement, warehousing, and compliance teams coordinate import entry, storage, and regional distribution with confidence.
A Manufacturing Partner with End-to-End Export Compliance Choosing Duolong means more than sourcing waterproof synthetic roof tiles—it means securing a fully compliant, customs-cleared delivery of tested and certified roofing materials. Whether you’re an importer, a public works contractor, or a national distributor, Duolong ensures your ASA-coated corrugated roof sheets and trapezoidal PVC panels move seamlessly from factory gate to project site without delay.
Flexible Order Quantities to Support Every Stage of Your Business
Low Minimum Order Quantities for Entry-Level and Trial Projects Not every client starts at full-container scale. At Duolong, we offer low MOQ options for buyers testing waterproof synthetic roof tiles in new markets or preparing small-batch deliveries for school roofing tenders, community housing pilots, or localized infrastructure projects. Whether it’s 840mm ASA-coated corrugated roof sheets, 1050mm trapezoidal waterproof PVC panels, or Roman profile synthetic resin tiles, our standard products are available for LCL shipments and early-phase deployments to meet diverse procurement needs.
Mixable Product Formats for Market Testing and Spec Diversity Clients can combine multiple waterproof roof tile profiles in one shipment—including ASA-coated corrugated sheets, dual-layer trapezoidal panels, translucent ASA skylight tiles, and flat PVC roofing boards. This flexibility allows distributors to assess regional demand, contractors to prepare tender mock-ups, and developers to compare installation performance across roof types. All items are barcoded by SKU, stacked for stability, and prepared for safe, efficient unloading and repacking at the destination warehouse.
Certified Production Standards for Every Order Size From small pilot orders to multi-container shipments, every waterproof synthetic roof tile is produced under ISO 9001:2015-certified quality management systems using the same calibrated extrusion molds, ASA resin formulations, and process controls. All tiles are inspected for thickness tolerance, wave pitch alignment, and color consistency. Export documentation—including CE certifications, SGS testing reports, and MSDS files—is issued for each shipment to ensure regulatory compliance even for trial-phase or sample-driven exports.
Smooth Scale-Up from Small Orders to Full Supply Contracts Clients who begin with smaller test orders of waterproof ASA PVC roof tiles can transition seamlessly into larger procurement phases without any deviation in profile dimensions, pigment ratios, or surface gloss. This consistency is critical for public sector tenders, multi-phase regional construction programs, and private infrastructure projects requiring aesthetic and structural uniformity.
Flexible Quantity Options for Installation Trials and Bid Submissions Trial shipments support on-site validation of waterproof synthetic roof tiles—allowing contractors to verify screw spacing, slope compatibility, and installation sequence before committing to bulk orders. Small-volume deliveries help procurement teams prepare product documentation for municipal tenders, assemble visual mock-ups for NGO-funded housing programs, and verify compliance with national roofing standards.
Full Export Documents Prepared for Every LCL Shipment Every order, regardless of size, ships with a complete export package: HS-coded commercial invoices, packing lists, Certificates of Origin, CE documentation, SGS test reports, and palletized load diagrams. Duolong coordinates shipments from Qingdao, Ningbo, or Shanghai under EXW, FOB, or CIF terms and arranges customs-cleared LCL forwarding for efficient entry into bonded warehouses or direct-to-site delivery zones.
A Roofing Supply System That Adapts to Your Growth From your first low-volume shipment of waterproof ASA-coated roof tiles to long-term supply agreements spanning multiple regions, Duolong delivers a scalable, certified, and consistent procurement experience. We ensure product uniformity, durable packaging, and smooth export coordination at every stage—helping your roofing supply strategy evolve seamlessly without compromising quality or operational reliability.
Dedicated After-Sales Support for Reliable Project Execution
Ongoing Technical Support for All Waterproof Synthetic Roof Tile Shipments Every Duolong shipment includes more than just waterproof synthetic roof tiles—we deliver field-oriented support from the moment your order leaves our factory. Whether you’re installing 840mm ASA-coated corrugated roof sheets, 1050mm trapezoidal waterproof PVC panels, or Roman profile synthetic resin tiles, our team provides complete documentation, fixing guidance, and on-call coordination to assist public contractors, regional distributors, and government procurement teams throughout the execution of each project.
Fixing Advice Tailored to Roofing Profile and Site Conditions Roof tile performance varies across different slopes, structural spans, and climate zones. That’s why Duolong supplies installation guidelines specific to each profile—detailing purlin spacing for ASA corrugated sheets, screw alignment for high-wind regions, and overlap ratios to manage thermal expansion in tropical or coastal environments. Our recommendations are grounded in real-world jobsite experience and help contractors avoid common issues like material stress points, leakage risks, and alignment errors in institutional or high-traffic projects.
Detailed Installation Manuals by Roofing Type Each order includes comprehensive printed and digital manuals customized for your product profiles—covering fastener placement, ridge cap installation, wind load anchoring, and thermal expansion allowances. Whether deploying trapezoidal waterproof roof tiles for coastal warehouse projects or twin-wall ASA panels for inland housing developments, these guides streamline on-site workflows and minimize errors during high-volume installations.
On-Site Problem Solving Based on Global Project Experience If challenges arise during installation—such as panel misfit, ridge misalignment, or corner lifting under wind exposure—our technical support team provides solution-driven guidance. Drawing from successful projects in Kenya, Vietnam, Jordan, and Indonesia for schools, logistics hubs, and public shelters, Duolong helps contractors resolve issues promptly to protect timelines and ensure each roof system achieves its intended lifespan.
Uniform Application for Multi-Location and Multi-Year Contracts We maintain detailed documentation of installation orientations, screw specifications, and color batch codes for buyers managing phased municipal housing, school campus renovations, or city-level public infrastructure projects. This system ensures each phase mirrors the last—preserving visual uniformity and technical precision even across multiple contractors or staggered build cycles.
Training Materials for First-Time Clients and Regional Crews For markets new to ASA roofing systems or first-time installers of waterproof synthetic roof tiles, Duolong supplies easy-to-follow 3D illustrations, multilingual video tutorials, and printable quick-reference guides. Larger orders or pilot tenders are supported with remote video calls or step-by-step walk-throughs during first deliveries, equipping your teams with the knowledge to install properly from the start.
Equal Support from Sample Order to Full Rollout No matter the shipment size, Duolong provides the same level of professional support. Whether you’re testing ASA-coated corrugated roof panels in a demo installation or supplying full-container quantities for a public sector tender, we ensure every order is installation-ready. Our goal is to help your crews install faster, reduce material loss, and complete projects with confidence—roof by roof, site by site.
Certification and Documentation Support for Government and Institutional Roofing Projects
Proven Delivery Experience for Public and Donor-Led Projects Duolong has supplied waterproof synthetic roof tiles and ASA-coated PVC roofing panels to government infrastructure and institutional development programs across Africa, Southeast Asia, and the Middle East. From 840mm ASA corrugated roof sheets to 960mm trapezoidal waterproof PVC tiles, our materials have been installed in school buildings, municipal shelters, rural housing clusters, and emergency-response facilities. We understand the technical documentation and approval pathways required for public-sector procurement and align our export processes with the compliance protocols of ministries, engineering authorities, and multilateral donor agencies.
ISO-Certified Manufacturing with Verified Material Testing All waterproof synthetic roof tiles are manufactured under ISO 9001:2015-certified quality management systems and verified through SGS and CE testing for structural integrity, UV stability, and thickness uniformity. Each production batch undergoes extrusion inspection to validate ASA adhesion, wave profile precision, and anti-aging performance. These records are archived and linked to the packing list of each shipment to provide full traceability from factory floor to audit documentation.
Complete Export and Tender Documentation Included Each shipment is accompanied by a comprehensive documentation package for customs clearance and public tender submission: HS-coded commercial invoices, Certificates of Origin, packing lists, and CE/SGS certification reports. Duolong also provides ISO-based technical datasheets, ASA-PVC material composition certificates, and Declarations of Conformity tailored to public BOQ specifications and national tender forms. This level of preparation minimizes modification requests during compliance reviews and speeds up approval timelines.
Product Specifications Aligned with Government Engineering Manuals Our waterproof synthetic roof tile designs—including corrugated and trapezoidal profiles—are calibrated to meet the specifications commonly found in government BOQs. We offer 2.5mm and 3.0mm thickness options, fixed wave dimensions, and standardized purlin spacing compatible with layouts for logistics centers, rural schools, and community housing projects. This alignment helps installers avoid non-compliance and site-level adjustments during inspection phases.
Multilingual Documentation Support for Regional Compliance To support regional compliance requirements and government audit processes, Duolong provides bilingual documentation sets in English–Arabic, English–Vietnamese, and English–Thai. Country-specific adaptations such as CE-SIRIM conversion files, SONCAP documentation, or QCVN compliance packages are available upon request. We work closely with national procurement teams and consultants to deliver audit-ready, format-matching documentation aligned with agency requirements.
Track Record in Government-Backed Roofing Schemes Duolong waterproof synthetic roof tiles have passed engineering validation and material acceptance in public school roofing projects, health clinic upgrades, and donor-funded shelter initiatives. From UN agency contractors to city-level infrastructure departments, our products have consistently cleared inspections and met full specifications without substitutions or delays. This includes documentation clearance at international ports, on-site verification, and final payment release stages for public tenders.
Reliable Support for Procurement Teams and Tender Submissions Working with Duolong gives you access to a dedicated compliance team and a manufacturing system optimized for institutional supply chains. We assist procurement offices and contractors through each stage of the process—prequalification, technical approval, and shipping clearance. Our waterproof ASA-coated PVC roof tiles and synthetic resin roofing systems meet CE and ISO standards, with verifiable records and experienced support teams for public and donor-linked roofing projects in high-compliance markets.
Proven Durability in Humid and High-Temperature Environments
Engineered for Tropical, Coastal, and UV-Intensive Conditions Duolong’s waterproof synthetic roof tiles and ASA-coated PVC roof panels are purpose-built for equatorial climates, monsoon regions, and salt-laden coastal air where conventional roofing materials deteriorate quickly. Whether you’re sourcing 840mm ASA corrugated roof sheets, 1050mm trapezoidal waterproof PVC panels, or Roman profile synthetic resin tiles, each format retains its shape, color, and performance under prolonged exposure to direct sunlight, heavy rainfall, and surface heat buildup. Our tiles have been installed successfully in port warehouses, school campuses, and community housing projects from Southeast Asia to West Africa.
Dual-Layer ASA Surface for Superior Weather Resistance Every waterproof synthetic roof tile is co-extruded with a robust PVC base and an ASA outer layer enhanced with UV stabilizers and anti-aging agents. This dual-layer construction prevents chalking, fading, and surface cracking often seen in low-cost alternatives. Even after years under intense tropical sunlight, Duolong’s ASA-coated PVC roof panels maintain their aesthetic finish, mechanical strength, and installation integrity—proven in real-world applications including municipal clinics and coastal logistics centers.
Independently Tested Against Accelerated Climate Simulation All ASA-coated waterproof synthetic roof tiles undergo rigorous third-party lab simulations replicating multi-year tropical wear. These tests include over 1,000 hours of UV exposure, water absorption rates below 0.1%, and retained impact strength under alternating wet-dry cycles. Test validations are further supported by deployment records in heat-intensive regions such as Nigeria, Cambodia, and the UAE.
Lightweight and Non-Porous Panels Reduce Roof Frame Stress Unlike metal roofing sheets prone to corrosion or clay tiles that absorb moisture and add weight, Duolong’s ASA-coated synthetic roof panels are lightweight and non-porous. This reduces dead load on timber or steel frames and prevents condensation-related failures. Perfect for fast-built structures like prefabricated health centers, market halls, and seasonal shelters, our tiles help extend structural longevity and lower framing costs.
Installation Guidelines Adapted for High-Humidity Construction Each shipment includes region-specific installation manuals that account for thermal expansion, screw spacing, and wind resistance. Detailed guidance on purlin distances, panel overlaps, and ridge gap settings ensures tiles remain securely fixed and stress-free during sudden tropical downpours, high daytime heat, and rapid nighttime cooling cycles.
Field-Proven Roofing Performance Across Harsh Climate Zones Selecting Duolong means choosing a roofing solution tested and proven in the same environmental conditions your projects face. Our waterproof synthetic roof tiles and ASA-coated PVC roof sheets continue to protect public infrastructure, institutional campuses, and rural housing across humid, UV-intense markets—offering contractors and procurement teams long-term durability, structural safety, and installation consistency project after project.