Composite Insulator Design: 1) GB/T19519-2004; IEC; ANSI 2) KEMA certification, ISO 9001 3) 10~1000kV / 70~600KN 4) Material: composite Polymer 5) Self-refined silicone rubber with imported raw material from DOR CORNING CO. USA; Fumed silica is imported from CABOT CO. in the USA and WACKER CO. in Germany. 6) Weathershed: silicon-rubber sheds are the feature of TAIGUANG technology. 7) Made of ECR core, acid and high temperature resistance. 8) Metal end fittings: advanced compressing technique with Acoustic Emission Detector imported from Finland. Performance: 1) Excellent electrical insulation properties and restoration of insulator performance 2) High mechanical strength 3) Good features of light weight, self cleaning, easy to install, anti-aging. 4) Good resistance to soiling and flashover 5) Hydrophobicity of sheds meets class HC1 . Wooden case/barrel