... GRP) and epoxy resin, With high mechanical strength and electrical. FRP insulator is made of fiberglass or ECR-fiberglass ... GRP) and epoxy resin, With high mechanical strength and electrical properties, light weight, high intensity, corrosion and high temperature ... insulator, cross arm insulator, electric railway insulators, HV switch, drop switch and other insulation industry .Outer diameter: 25-200 ...