FR4 Fiberglass Sheet Manufacturer & Supplier | 9 Years Experience
Why Choose a Professional FR4 Fiberglass Sheet Manufacturer?
FR4 fiberglass sheet (Flame Retardant 4) is the most core insulation base material in electronics, new energy, and power industries. Choosing a professional manufacturer — not a trader — directly affects quality consistency, delivery capability, and long-term cost.
Chaorong Electronics — Your Professional FR4 Fiberglass Sheet Manufacturer
Founded in 2016 in Dongguan, Chaorong Electronics specializes in precision machining and sales of insulation materials including FR4, G10, 3240 phenolic board, and carbon fiber board. Over 9 years, our products have been widely used in:
- Switching power supplies and adapter insulation structural parts
- New energy vehicle battery packs and charging pile insulation spacers
- Photovoltaic inverter and energy storage system insulation brackets
- Drone frames and military electronic equipment
- PCB fixtures and test fixture insulation boards
FR4 Fiberglass Sheet Core Parameters & Specifications
| Parameter | Standard FR4 | High Tg FR4 | Test Standard |
|---|---|---|---|
| Glass Transition Temperature (Tg) | 130°C | 170°C | IEC 60249 |
| Dielectric Strength | ≥20 MV/m | ≥20 MV/m | IEC 60243 |
| Volume Resistivity | ≥10¹⁰ Ω·m | ≥10¹⁰ Ω·m | IEC 60093 |
| Flexural Strength | ≥340 MPa | ≥340 MPa | IEC 60893 |
| Flame Retardancy | UL94 V-0 | UL94 V-0 | UL 94 |
| Thickness Range | 0.5–50mm | 0.5–50mm | — |
| Water Absorption | ≤0.10% | ≤0.10% | IEC 60068 |
| Operating Temperature | -50°C~+130°C | -50°C~+170°C | — |
Our Core Advantages
✅ Manufacturer Direct Supply — Quality Under Control
From raw materials to finished products, we maintain full self-production. Each batch comes with a material certificate, 100% appearance inspection before shipment, and support for third-party testing (SGS, UL).
✅ Full-Specification Stock — Fast Delivery
Common specifications are in stock, including 0.5/0.8/1.0/1.2/1.5/2.0/3.0/5.0/10mm thickness. Small batch orders ship within 3–5 working days.
✅ Precision CNC Machining — One-Stop Service
Equipped with CNC precision machining equipment, we offer custom cutting, drilling, milling, and routing based on your drawings — providing an integrated "material + machining" solution that reduces intermediaries.
✅ Export Certifications — Ships Worldwide
Products are certified by UL and tested for RoHS compliance, meeting international standards. We support FOB Dongguan / CIF / DDP and serve customers across Southeast Asia, Middle East, and Europe/Americas.
✅ Flexible MOQ — Sample Support
Flexible minimum order quantity. Samples available from 1 piece. Sample fees can be credited against bulk order payments, reducing your testing costs.
Custom Machining Capabilities
In addition to standard sheet sales, we offer the following custom services:
- Drawing-Based Machining: Provide CAD drawings (PDF/DXF/DWG), we handle cutting, drilling, and routing
- Special Specifications: Extra thick (>50mm), ultra-thin (<0.5mm), or non-standard sizes
- Surface Treatment: Deburring, grinding, logo silkscreen printing
- Full Assembly: Multi-material combined assembly (FR4+PC+metal brackets)
Application Cases
Case 1: German Power Supply Adapter Insulation Board
The customer required 0.8mm high-Tg FR4 sheets, custom-cut to 120×80mm insulation gaskets, with deburring and dielectric testing. We completed the sample within 7 working days, and the 3rd batch order now has stable monthly delivery of 5,000 pieces.
Case 2: Indian New Energy Charging Pile Manufacturer
The customer sourced 1.5mm/2.0mm FR4 as OBC internal insulation spacers, with an annual order volume of 12,000 pieces, including UL reports and raw material factory certificates.
Contact Us — Get a Free Quote
Whether you are looking for an FR4 fiberglass sheet wholesaler or a professional custom machining manufacturer, Chaorong Electronics can provide you with the right solution.
Need More Information?
Chaorong Electronics specializes in industrial materials and electronic components manufacturing. Contact us for product catalog and technical support.
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