... we fulfilled the production line of ZnO varistor, metal oxide surge arrester, fuse cutout, polymer insulator, disconnecting switch, vacuum circuit ... Bureau, Jiaoji Railway, Lanwu Railway, Zhengxu Railway etc. Our surge arresters for oversea market have passed type test in KEMA Lab, which ... are ISO9001:2000 certified company and 10 types of surge arresters and 3 types of fuse cutouts have passed type ...