Zhengzhou City Unites Steel Industrial Co., Ltd.(sale17(at)cus-steel(dot)com) Was established in 1998. (skype:kathy-1025)Cus-group is a professional supplier of high quality PPGI, cold roll-forming machine and the colorful stone-coated metal roof tile. We can supply our customers mainly in: Color coated steel coils( PPGI), hot dip galvanized steel coils( GI), colorful stone-coated metal tile, sandwich panel, cold roll-forming machinery, steel structure, mobile house and other relevant products.