Leading Translucent Fiberglass Panel Manufacturer

Donghong FRP is an experienced manufacturer of translucent fiberglass panels and FRP daylighting products, with more than 30 years of FRP industry experience. Our 52,000 m² factory operates 21 production lines and provides reliable production capacity, quality control, and OEM/ODM services for customers worldwide.
We offer FRP skylight panels, corrugated fiberglass sheets, and customized translucent fiberglass panels in different thicknesses, sizes, profiles, colors, and light transmission levels. Our products are widely used in factories, warehouses, greenhouses, livestock buildings, chemical facilities, and other industrial and commercial applications.
Translucent Fiberglass Panel Types
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FRP Skylight PanelOperating temperature: -40°C to +120°C
UV resistance: 95%
Fire-retardant oxygen index: ≥30
Service life: 15–25 years
Applications: Industrial plants, large shopping malls,... -
Fiberglass Translucent SheetFiberglass Translucent Sheet is a composite daylighting panel made of high-grade resin and fiberglass.Fiberglass Translucent Sheet delivers up to 99% light transmission, excellent UV shielding,...
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Corrugated FRP Skylight SheetCorrugated FRP Skylight Sheet is a fiberglass-reinforced polyester panel designed for natural daylighting in industrial and commercial buildings. Corrugated FRP Skylight Sheet combines high light...
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Frp Corrugated Roofing SheetFRP corrugated roofing sheet uses selected premium resins to ensure superior durability and flame-retardant performance.
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Anti Corrosive FRP Skylight SheetAnti corrosive FRP Skylight Sheet is a dedicated daylighting panel engineered for steel structure roofing systems. Crafted with high-grade resin and alkali-free glass fiber, it adapts to coastal...
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UV Resistant FRP Translucent PanelUV Resistant FRP Translucent Panel is a practical daylighting sheet widely used in steel structure roofing constructions. Field-proven to withstand long-term outdoor exposure, it delivers solid UV...
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Fireproof FRP Translucent PanelFireproof FRP Translucent Panel is a high-performance composite panel for steel-structured roofs and walls, delivering stable light transmission, flame retardancy, corrosion resistance and UV...
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Industrial Roof Daylighting PanelWith exceptional UV resistance and thermal insulation, Industrial roof daylighting panels are the optimal cost-effective solution for modern industrial enclosures.
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Greenhouse Corrugated Fiberglass PanelGreenhouse Corrugated Fiberglass Panels serve as the ideal cost-effective glazing solution for optimizing plant growth and withstanding harsh weather in modern agricultural structures.
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Warehouse Skylight PanelWarehouse Skylight Panel is a fiberglass-reinforced polyester daylighting product for industrial warehouse roofs. It uses high-grade resin and anti-UV film, offering high light transmittance,...
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Corrugated Translucent Fiberglass Roof PanelCorrugated Translucent Fiberglass Roof Panel is a corrugated translucent FRP panel for steel-structure roofing, delivering high light transmission, UV resistance, corrosion protection and flame...
What Is Translucent Fiberglass Panel?

A translucent fiberglass panel, also known as an FRP skylight panel, FRP translucent sheet, fiberglass roofing panel, or FRP daylighting panel, is a lightweight daylighting material commonly used with or as an alternative to metal roofing and wall panels. It is primarily made from UV-resistant film, specialized unsaturated polyester resin, and high-quality fiberglass reinforcement, providing a durable structure with natural light transmission.
FRP translucent panels offer a practical combination of light transmission, weather resistance, corrosion resistance, and durability. They are widely used for daylighting in industrial factories, warehouses, aquaculture and livestock facilities, agricultural greenhouses, sports venues, and commercial or residential buildings, helping introduce natural light while providing reliable protection for different building environments.

Translucent Fiberglass Panel Specifications
Donghong translucent fiberglass panels are manufactured from high-quality fiberglass reinforcement and unsaturated polyester resin, with multiple profiles, thicknesses, colors, and performance options available for different roofing and daylighting applications.
Basic Specifications
|
Parameter |
Specification |
|
Material |
Fiberglass Reinforced Polyester (FRP) |
|
Thickness |
0.8 / 1.0 / 1.2 / 1.5 / 2.0 mm |
|
840 Profile |
Wave height 21 mm; wave pitch 210 mm; effective width 840 mm |
|
900 Profile |
Wave height 16 mm; wave pitch 225 mm; effective width 900 mm |
|
760 / 470 Profile |
Standing seam / snap-lock profiles for long-span roofing |
|
Length |
Standard 6 m; custom lengths available |
|
Weight |
Approx. 1.8–3.2 kg/m², depending on thickness |
|
Color |
Clear, opal white, blue, green, and customized colors |
|
Profile Matching |
Compatible with common color-coated steel and metal roofing profiles |
Optical Properties
|
Parameter |
Specification |
|
Light Transmittance |
25%–90%, depending on specification |
|
Clear Panel |
Approx. 85% light transmission |
|
Milky White / Blue-Green |
Approx. 50%–75% light transmission |
|
Light Quality |
Diffused, soft, and low-glare natural light |
|
UV Protection |
Up to ≥99% UV blocking, depending on product specification |
|
Haze / Light Diffusion |
High diffusion options available for uniform indoor illumination |
Mechanical & Performance Properties
|
Parameter |
Specification |
|
Tensile Strength |
≥84–177 MPa |
|
Flexural Strength |
≥125–200 MPa |
|
Impact Resistance |
High impact resistance for outdoor roofing applications |
|
Operating Temperature |
-40°C to +120°C; selected products up to -60°C to +140°C |
|
Thermal Expansion Coefficient |
Approx. 1.5 × 10⁻⁵ /°C; product-specific values may vary |
|
Flame-Retardant Options |
F1: Oxygen Index ≥30%; F2: Oxygen Index ≥26% |
|
Corrosion Resistance |
Resistant to moisture, salt spray, acids, alkalis, and many industrial environments |
|
Service Life |
Approx. 15–25 years, depending on product, environment, and installation |
|
Warranty |
Up to 20-year limited light transmission warranty for selected products |
Available Performance Options
|
Product Option |
Main Performance |
|
Standard FRP Panel |
General-purpose roof and wall daylighting |
|
UV-Resistant FRP Panel |
Enhanced UV and weather resistance |
|
Anti-Corrosive FRP Panel |
Designed for chemical, coastal, and corrosive environments |
|
Flame-Retardant FRP Panel |
Enhanced fire-performance options for industrial applications |
|
Gel-Coat FRP Panel |
Improved surface protection, weatherability, and appearance |
|
Customized FRP Panel |
Customized thickness, profile, length, color, and light transmission |
Note: Actual specifications may vary according to panel profile, thickness, resin system, reinforcement, surface treatment, and project requirements. Technical data and applicable test standards should be confirmed before production for specific projects.
Raw Materials & Manufacturing Process
High-quality raw materials and a controlled manufacturing process are essential to producing durable and consistent translucent fiberglass panels. We carefully select reinforcement fiberglass, polyester resin, surface film, and curing agents from established suppliers, while maintaining strict process controls throughout production.
Selected Raw Materials
Reinforcement Fiberglass
Owens Corning, Vetrotex, and Taishan Fiberglass, providing high strength, uniform thickness, and good resin impregnation.
Polyester Resin
DSM SMR and other established brands, with UV absorbers to help reduce UV degradation and extend product service life.
Surface Film
DuPont Melinex and Garware PT-055 series, offering reliable weather resistance for outdoor applications.
Curing System
Akzo K80 series curing agents and cobalt-based promoters for stable and consistent curing.


FRP Translucent Panel Manufacturing Process
Our production process is carried out through controlled and continuous manufacturing steps:
Enclosed Automatic Feeding → Material Batching → Mixing → Resin Content Control → Reinforcement & Resin Lay-Up → Graded Impregnation → Defect Removal → Curing & Forming → Secondary Curing → Cooling → Pulling → Edge Trimming → Automatic Cutting → Product Inspection → Finished Product Storage
This controlled process helps maintain consistent panel thickness, resin content, dimensions, surface quality, and overall performance across production batches.
Key Performance of Translucent Fiberglass Panels
Our translucent fiberglass panels are engineered with high-performance fiberglass reinforcement, weather-resistant resins, UV protection, and optimized manufacturing processes to provide reliable daylighting and long-term outdoor performance.
High Impact & Flexural Strength
High-performance E-glass reinforcement provides good impact resistance and flexibility, helping panels withstand hail, strong winds, and other outdoor conditions without becoming brittle.
Excellent Light Transmission
Light transmission can range from 25% to 90%, depending on the panel specification. The translucent structure diffuses incoming light to create more uniform indoor illumination with reduced glare and harsh light spots.
Thermal Stability
With a thermal expansion coefficient of approximately 2.5–3.2 × 10⁻⁵ m/m/°C, FRP panels have thermal expansion characteristics relatively close to steel, helping reduce stress at connection points caused by temperature changes.
UV & Weather Resistance
Weather-resistant gel coats or films, combined with UV absorbers, help filter more than 99% of UV radiation and reduce material degradation, discoloration, and aging during long-term outdoor exposure.
Flame-Retardant Options
Different resin formulations can provide enhanced flame-retardant performance. Selected grades can achieve oxygen index requirements such as OI ≥ 30 or OI ≥ 26, depending on the specified formulation and standard.
Lightweight & Flexible
FRP panels are lightweight compared with many traditional daylighting materials, helping reduce transportation, handling, installation, and structural support requirements. Certain profiles can also be cold-bent for specific curved applications.
Condensation & Self-Cleaning Performance
Anti-condensation treatments can help reduce water droplet formation caused by temperature differences. Smooth surface films also make dust less likely to accumulate, supporting easier maintenance.
Long-Term Outdoor Performance
Quality FRP panels are designed to maintain stable performance under both hot and cold conditions, providing reliable service for industrial, agricultural, and commercial daylighting applications.
Translucent Fiberglass Panel Performance Comparison
Not all daylighting panels offer the same level of strength, weather resistance, light quality, or service life. The following comparison highlights the key performance differences between Donghong FRP translucent panels, generic FRP, corrugated polycarbonate, and multiwall polycarbonate.
|
|
Donghong FRP |
Generic FRP |
Corrugated PC |
Polycarbonate multiwall |
|
Tensile strength |
≥110 MPa |
70 MPa |
60 MPa |
60 MPa |
|
Flexural strength |
≥140 MPa |
120 MPa |
— |
— |
|
Rigidity |
Barcol ≥50 |
Barcol 40 |
— |
— |
|
Profile match with colour steel |
Crisp ribs, nests correctly |
Fair |
Partly |
Difficult |
|
Weatherability |
Anti-ageing resin + Melinex film + gel coat |
Poor — yellows, fibres exposed |
Variable, wide spread between suppliers |
Variable, wide spread between suppliers |
|
Light quality |
Diffuse, comfortable |
Diffuse |
Refractive, uncomfortable |
Good, direct and diffuse mixed |
|
Light transmission |
85 % |
83 % |
87 % |
80 % |
|
UV blocked |
99 % |
90 % |
88 % |
70 % |
|
Thermal expansion (×10⁻⁵ m/m/°C) |
1.5–3.2 |
2.4–3.5 |
7.0 |
7.0 |
|
Service life |
up to 25 years |
3–5 years |
2–10 years |
2–10 years |
|
Heat resistance |
−60 °C to +140 °C |
−20 °C to +95 °C |
deforms in summer heat |
deforms in summer heat |
|
Install and maintenance cost |
Medium |
Medium |
Medium |
Higher |
Translucent Fiberglass Panel Applications
Designed for natural daylighting and demanding outdoor environments, translucent fiberglass panels are widely used across industrial, agricultural, commercial, and public buildings. Different panel specifications can be selected according to light transmission, corrosion resistance, fire performance, and environmental requirements.





Translucent Fiberglass Panel Installation & Construction Guide
Proper handling and installation are important for maintaining the performance and waterproofing of translucent fiberglass panels. Follow appropriate construction practices and manufacturer recommendations throughout transportation, installation, and final inspection.
Handling & Storage
Avoid dragging panels or allowing the edges and surfaces to contact hard objects.
Carry panels with sufficient support along both sides to prevent bending or breakage.
Store panels on a firm, flat surface with protective boards at the top and bottom.
Do not place heavy objects on stored panels or allow workers to step on them.
Secure stacked panels properly to prevent movement in strong winds.
For lifting, use multiple lifting points to provide even support.
Installation Steps
Roof Preparation → Panel Positioning → Pre-Drilling → Panel Overlapping → Waterproof Sealing → Fastening → Final Inspection
During installation:
·Install panels progressively from the eave toward the ridge.
·Pre-drill fixing holes to accommodate thermal expansion and contraction.
·Provide adequate longitudinal overlap between FRP panels and steel roofing.
·Use suitable EPDM washers, butyl sealing tape, or compatible sealants at fixing and overlap areas.
·Fasten panels to the purlins using suitable self-drilling screws and controlled drilling speed.
·Never walk directly on translucent fiberglass panels during installation.

Waterproofing in Special Applications
Additional waterproofing measures may be required in areas exposed to heavy rainfall, strong winds, standing water, or high-frequency roof vibration. Depending on the roof profile, solutions may include proper overlap design, side sealing, waterproof covers, sealants, or closed end plugs.

Recommended Panel Layout
For roof daylighting, continuous or semi-continuous daylighting strips from the ridge toward the eave are commonly used. If the required indoor daylight level cannot be achieved, additional daylighting strips or side-wall panels can be considered.
Avoid excessively wide daylighting strips or layouts that create difficult longitudinal joints. Proper panel spacing and profile matching can help reduce installation risks, prevent cracking, and improve long-term waterproofing performance.

Post-Installation Inspection
After installation, check that:
No cracks or damage have occurred around fasteners.
No panels have been damaged by impact or foot traffic.
Longitudinal and side overlaps are properly sealed without visible gaps.
All foreign materials and debris have been removed.
Required installation records and inspections have been completed.
Why Choose Donghong for Translucent Fiberglass Panels?
Choosing the right translucent fiberglass panel manufacturer is essential for consistent product quality, reliable delivery, and long-term project performance. Donghong combines extensive FRP manufacturing experience, modern production capacity, and professional technical support to provide reliable daylighting solutions for customers worldwide.
30+ Years of FRP Industry Experience
With roots in the FRP industry dating back to the 1990s and a company established in 2008, Donghong has extensive experience in manufacturing and exporting FRP skylight and translucent panels.
Large-Scale Production Capacity
Our factory covers approximately 52,000 m², with 21 production lines and more than 150 employees, supporting stable production capacity and consistent quality for both standard and customized orders.
Professional Product & Material Selection
From profile matching and material selection to UV-resistant, anti-corrosion, flame-retardant, and gel-coat options, we provide solutions according to different building environments and project requirements.
OEM & Custom Manufacturing
We can customize panel profiles, thicknesses, dimensions, colors, and light transmission to match existing roofing systems and specific project requirements.
Quality Control & Export Support
With ISO certification and independent import and export rights, Donghong provides quality control and professional export services for customers in Central Asia, Southeast Asia, the Middle East, Africa, and other markets.
Technical & After-Sales Support
Our service covers pre-sales product selection, profile matching and samples, installation guidance, and technical support to help customers complete their projects efficiently.
FAQ
Q: What are the advantages of FRP translucent fiberglass panels compared with other daylighting materials?
A: FRP translucent fiberglass panels offer a practical combination of light transmission, strength, weather resistance, corrosion resistance, and easy installation. Unlike glass, FRP panels are lightweight and less prone to breakage. Compared with many polycarbonate or PVC daylighting products, FRP panels offer good UV resistance, low thermal expansion, and excellent compatibility with profiled metal roofing. FRP panels also provide soft, diffused natural light, helping reduce glare and harsh light spots inside industrial buildings. Their corrugated profiles can be manufactured to match common metal roofing sheets, making them suitable for roof and wall daylighting systems.
Q: Why can a high-quality FRP panel feel relatively rigid or brittle?
A: A properly manufactured FRP panel needs sufficient rigidity and flexural strength to maintain its shape under wind, temperature changes, and other normal service conditions. High-quality panels use fiberglass reinforcement and a properly cured resin system to provide structural stability. FRP daylighting panels are designed to be handled and installed according to recommended construction procedures. They should not be treated as walkable roofing materials or subjected to concentrated loads during installation.
Q: How much light can a translucent fiberglass panel transmit?
A: The light transmission of FRP translucent panels depends on the resin, color, thickness, surface treatment, and panel design. Typical light transmission can range from approximately 25% to 90%, while clear panels can provide around 85% light transmission. Different light transmission levels can be selected according to project requirements. Diffused panels are particularly useful where uniform indoor illumination and reduced glare are important.
Q: Are FRP translucent panels suitable for corrosive environments?
A: Yes. FRP is naturally resistant to rust and offers good resistance to many corrosive environments. Anti-corrosive FRP skylight panels can use weather-resistant resin, fiberglass reinforcement, and UV or chemical-resistant surface protection for demanding applications. They can be used in chemical plants, electroplating workshops, metallurgy facilities, wastewater treatment facilities, coastal buildings, and other environments exposed to moisture, salt spray, or corrosive substances. The exact resin system and panel specification should be selected according to the chemicals and concentration involved.
Q: Are FRP translucent fiberglass panels UV resistant?
A: Yes. UV-resistant FRP panels use weather-resistant surface films, gel coats, and UV stabilizers to reduce ultraviolet degradation, yellowing, and aging. Depending on the product specification, Donghong FRP translucent panels can block a high percentage of UV radiation while maintaining stable light transmission during outdoor use. Some product specifications indicate UV blocking of up to 99%.
Q: How long do translucent fiberglass panels last?
A: The service life depends on the resin system, UV protection, thickness, installation method, climate, and application environment. Donghong offers FRP skylight products with typical outdoor service lives ranging from 15 to 25 years, depending on the product specification and operating conditions. For selected industrial roof daylighting products, a 20-year limited light transmission warranty is available. Specific warranty terms should be confirmed according to the product and project requirements.
Q: Are flame-retardant FRP translucent panels available?
A: Yes. Flame-retardant FRP translucent panels are available for industrial buildings and applications with additional fire-performance requirements. Different formulations can provide different flame-retardant performance. For example, some FRP products are available with oxygen index requirements of ≥30 or ≥26, depending on the formulation and applicable standard. Flame-retardant grades should be selected according to the building's fire-safety design and local regulations.
Q: Why can the thickness of an FRP translucent panel vary slightly?
A: FRP panels are formed using a resin-based composite manufacturing process, and minor thickness variations can occur during forming, particularly around corrugation profiles and curved sections. Donghong manufactures daylighting panels according to applicable production standards, with product thickness controlled within the specified tolerance. The appropriate thickness should be selected according to the panel profile, support spacing, wind and snow loads, and project requirements.
Q: Can FRP translucent panels withstand strong wind and other outdoor loads?
A: FRP translucent panels are reinforced with fiberglass and can provide good tensile, flexural, and impact performance. However, their actual wind-load capacity depends on panel thickness, profile, support spacing, fastener arrangement, overlap design, and local wind conditions. For high-wind or typhoon-prone areas, thicker panels, closer purlin spacing, suitable fasteners, and additional reinforcement may be required. We can recommend the appropriate panel specification and installation method based on your project conditions.
Q: Can FRP translucent panels be customized for different roofing systems?
A: Yes. FRP translucent panels can be customized according to project requirements, including thickness, length, width, color, light transmission, and corrugation profile. Common profiles such as 840, 900, and 760 are available, and customized profiles can be produced to match existing color steel or metal roofing sheets. Customization helps ensure proper overlap, fastening, and waterproofing during installation.
Q: Need Help Choosing the Right FRP Translucent Panel?
A: Tell us your roofing profile, panel thickness, building application, required light transmission, project dimensions, and local climate conditions. Our technical team can recommend a suitable FRP translucent panel and provide customized specifications and a quotation.
Handan Donghong Fiberglass & Color Steel Manufacturing Co., Ltd. is one of the most professional translucent fiberglass panel manufacturers and suppliers in China, featured by quality products and good price. Please rest assured to wholesale durable translucent fiberglass panel made in China here and get quotation from our factory. Customized orders are welcome.
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