The series products are composed of fiber glass rod, silicone shed and metal fittings. The silicone shed adopt the whole packing pressure technique, and then to solve the key problem - interface electric spark puncture, which would affect the reliability of composite insulator, connection of the fiberglass rod and metal fittings,adopts the pressure welding technique of the international advanced level and have the full automatic sound wave detection of defects system, high intension, beautiful outline, small volume, light weight, and the metal fitting of galvanization can corrosion prevention and exchange used with porcelain insulator, this product is reliable structure cannot damage the rod, and take full advantage of the mechanical strength