... a short look at our Video, you can find the Isolator insulator factory. Insulator: Composite insulator, Silicone insulator, Polymer Insulator, Compound ... Advantage: We not only produce silicone rubber, but also glass fiber rod by ourselves to assure the quality and best price ... , 1) Silicon Rubber for sheds/ housing2) Glass-fiber reinforced epoxy resin rod (ECR type) for core3) Hop dip ...