We produce long rod silicone rubber insulators with high pressure injection shapping method . The insulators have excellent both mechanical & electrical performance . The silicone rubber we used are HTV type (high temperature vulcanization). The both end metal fittings material are made of forged steel , Fiber glass rod material is ECR FRP type . All those materials can guarantee the final product in high quality . 1)We offer high quality dead end composite insulators and long rod insulators according to ANSI standard and IEC standards . 2) The shed color can be light gray or red . 3) The long rod insulators can be made up to 1000 kV 500kN . And the related goods type tested in independent Labs. The high quality will make you very satisfied .