The development and development of insulation transformer pressboard is one of the key factors affecting the development of electrical technology. From the future trend, the requirements of the development of high pressure, heat insulation, impact resistance, environmental insulation, composite insulation, corrosion resistance, water resistance, oil resistance, resistance to cryogenic, radiation and flame retardant materials, research and development of environmentally friendly energy- Motor F, H-class insulation series, such as unsaturated polyester resin glass felt board; high-voltage power transmission equipment with sulfur hexafluoride gaseous medium; instead of chlorinated biphenyl new non-toxic synthetic media; high-performance bakelite electrical insulation board; synthetic paper composite insulation; flame retardant rubber and plastic materials and surface protection materials, while actively promoting the traditional electrical equipment insulation materials replacement.