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FR4 insulation sheet is a high-performance composite material crafted from woven fiberglass cloth reinforced with flame-retardant epoxy resin, meeting the UL94 V-0 standard for self-extinguishing safety. It features exceptional electrical insulation properties, near-zero water absorption, and stable performance that retains high mechanical strength and reliable dielectric characteristics in both dry and humid environments. With a long-term continuous operating temperature up to 155℃ (F-class thermal resistance), excellent strength-to-weight ratio and easy machinability, this versatile laminate is ideal for PCBs, electrical equipment insulation, new energy battery packaging, rail transit facilities, transformers and various industrial mechanical applications. Custom sizes, thicknesses and color options are available to precisely match your specific project requirements.
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