1)Main material:porcelain 2)ANSI,IEC standard 3)OEM/ODM High voltage electric pin type insulator 1) PIN tpye insulators2) Main material:porcelain3) standard ... : ANSI,IEC,ISO9001,KEMA etc.4) Item NO.: 56-1, 56-2, 56-3, 56 ... forward to your reply! we will arrange everything for you. High voltage electric pin type insulator