Polyurethane Sandwich Panel also called PU Sandwich Panel, the up & down surface of this panel is Galvanized & Pre-painted steel sheets, core material is 5 components Polyurethane glue, it is formed by heating, foaming & laminating.
Factory Workshop Building Prefab Warehouse Steel Frame Structure Construction Best Design Fine Price Galvanized Steel Structure Shed for Factory Direct From Factory Portal Frame Steel Structure with High Quality Prefabricated Construction Materials Building Steel Structure for Factory Warehouse
China Manufacturer Wholesale Price Steel Structure Frame Zinc Coated Steel Profile C Z Galvanized C Z Purlins for Roof Support High Quality Warehouse Style House Plans Steel Structure Truss Purlin Hot Rolled Black Galvanized Channel Steel C Z Purlin