... panel 1.China direct supplier of steel structure 2.Light weight structrul steel steel structure of sandwich panel 1. Item Name: steel structure ... .b. Hot-dipped galvanized, when the thickness of parts is less than 5mm,thickness of hot-dipped gal is more than 65um ... ), color, type, etc.E. You can choose freely the material of door and windowsF. We also have so many accessories, for ...