Gi; PPGI manufacturer / supplier in China, offering Guanxian 0.18mm Zinc Steel Roof 80cm*300cm Bwg34 0.12mm-2.0mm Thickness Galvanised Heat-Insulation-Zinc-Corrugated-Roofing-Sheet, Guanxian High Quality Factory Supply Z20-Z275 Sheet Metal Roofing Tiles Building Material Galvanised Corrugated Raw Material Foldable Roofing Sheet, Guanxian China Factory 0.35*851mm ASTM A792 Zincalum Steel Roofing AISI ASTM DIN JIS GB JIS En Standard Galvanised 0.8mm-Corrugated-Roofing-Sheet and so on.