This product mainly uses in the electrical power system transformer substation and the transmission line insulator, the power plant and the electric power user changes outside the electricity equipment as well as other electrical equipments insulates lastingly anti flashover . After the porcelain (or glass) the insulator uses this product, Forms the porcelain (or glass) the skeleton complex effect, Enhances one kind of standardized disposition plan which outside the power transformer equipment insulates. Is suitable in alternating and direct circuit system rated voltage 1~750kV, Environment Temperature -50℃~ +50℃, Under the contamination condition moves outside the transformer substation and the impractical transmission line equipment insulates antifouling, Prevention flashover, Enhances the equipment outside to insulate the rank.