our distribution equipment including column switch, ring main unit, box-type substation, high-low voltage complete equipment, primary and secondary full set pole switch and ring main unit have won the centralized bidding and been supplied in 22 provinces, including jiangsu, zhejiang, fujian, tianjin, jiangxi, hunan, sichuan, chongqing, hubei, henan, anhui, shandong, hebei, jilin, liaoning, gansu, xinjiang, heilongjiang, and inner mongolia of state grid and guangdong, guangxi, and yunnan of cspg; the product has stable and reliable operation quality and has won the praise of users.