With the continuing development of the electric industry, the composite Insulator which adopted Synthesis insulation materials are popularized and applied rapidly by its excellent mechanical and electrical function. It becomes the new generation products replace the traditional porcelain insulator. Composite insulator shed made of silicon rubber for grantee the outside insulation; high strength Epoxy poles provide inside insulation for products and sustain machine load. Type :FXBW4-10/70 Rated Voltage (KV) :10 Rated mechanism stretch load(KN) :70 construction height (mm) :350 Min Arc distance (mm) :180 Creep age distance(mm) :400 Lightning impulse withstand BIL(KV) :95 frequency withstand(wet)(KV) :45