Our flagship Heat-Resistant Epoxy Glass Cloth Fiber Board (also called 3240 Board, Epoxy Fiberglass Sheet, Insulating Glass Fiber Material Board) is a high-performance laminated insulation material for demanding industrial & electrical applications. Made via advanced lamination tech, it uses electrical-grade alkali-free glass fiber cloth (base) and premium epoxy phenolic resin (bonding agent), formed into a uniform, dense, durable structure through precision soaking, baking & hot-pressing.

• ✔ Exceptional Heat Resistance: Meets Class B standards (continuous 130°C), maintains stable mechanical/electrical properties in high temps, resisting thermal aging/deformation.
• ✔ Superior Insulation Performance: Excellent dielectric strength (rated 600V) and low dielectric loss, offering reliable insulation for electrical components to prevent leakage/short circuits in high-voltage scenarios.
• ✔ Robust Mechanical Strength: High tensile strength, impact resistance, dimensional stability (resists warping/cracking); smooth surface enables precise machining (cutting, drilling) with neat edges, supporting customized thickness/size per customer needs.

• • Battery Packs: Serves as high-reliability insulation layers for lithium-ion and NiMH battery packs. It effectively isolates battery cells from external electrical interference and mechanical friction, maintaining stable insulation performance even under the temperature fluctuations of battery operation—providing a safe protective barrier for energy storage systems.
• • Electrical Field: Widely applied in key electrical components such as switchgear, transformer oil barriers, and high/low-voltage electrical cabinets. Its excellent dielectric strength and heat resistance ensure long-term insulation stability, preventing electrical leakage or short circuits in complex power supply environments and enhancing the overall safety and service life of electrical equipment.
• • Tooling & Molds Industry: Ideal for manufacturing auxiliary components in PCB (Printed Circuit Board) testing, ICT (In-Circuit Test) fixtures, and mechanical molds. With high dimensional stability and precise machinability, it can be customized into components of various shapes and thicknesses to match the strict precision requirements of tooling and mold assembly, ensuring smooth operation of testing and production processes.

1. Flexible and diverse products with thousands of product specifications to meet the diverse needs of buyers.
2. OEM and ODM designs and lables are welcome.
3. The minimum order quantity is low and samples can be customized.
4. Short production delivery cycle, fast delivery speed of the entire cabinet.
5. Multiple payment methods facilitate customer payment.