Roofing Sheet, Galvanized Steel, Galvalume Steel manufacturer / supplier in China, offering Dx52D G90 Galvanized Steel Coil with Uniform Zinc Layer for Air Duct and Ventilation Systems, ASTM A653 Z100 Galvanized Steel Coil with Chromated and Oiled Finish for Garage Door and Rolling Shutters, Sgcd Z120 Hot DIP Galvanized Coil with High Zinc Coating for Construction and Framing Use and so on.