Electrical soft composite materials include E, B, F, and H grades with good mechanical strength. Dielectric properties and reliable thermal adhesion. The E grade includes composite paper; the B grade includes DMD, DMDM, DM; the F grade includes F grade DMD; the H grade includes NHN and NMN. It is widely used in power generation equipment such as slot insulation, turn-to-turn insulation and gasket insulation of transformers, power transmission and transformation equipment, traction locomotives, motors, electrical appliances and electronics.