Polyimide film polyaramide fiber paper soft composite material, which is made of two-sided aramid fiber paper and polyimide film bonded and compounded. The heat resistance grade of this product is H grade, which has good dielectric and mechanical properties. The mechanical properties are outstanding both at high temperatures and after being exposed in moisture. Used for slot insulation, turn-to-turn insulation of H-class motors and electrical appliances, interlayer insulation of gaskets and H-class dry-type transformers, etc. Executive standard: GB/T5591.3-2008