FR-4 is a code for the grade of fire-resistant materials, which means that the resin material can self-extinguish after combustion.
Advantages: insulation flame retardant, heat and moisture resistance, high flatness, thickness tolerance standard.
Scope of application：
High performance electronic insulation requirements of products, such as FPC reinforcement board, PCB drilling pad, glass fiber meson, potentiometer carbon film printed glass fiber board, precision star gear (lens grinding), precision test plate, electrical (electrical) equipment insulation bracing separator, insulation plate, transformer insulation board, motor insulation, electronic switch insulation board, etc.