... and noble. They are widely used as the roof of building. Metal Roof PanelProduct Introduce:Corrugated sheets are roll formed by roll ... more economic, (low lost ).They are widely use as the roof of factory, warehouse, garage, exhibition center, cinema etc.Products Feature ... with bad weather conditions during roof-on-roof assembly. 5. Reduce the load to borne by the roof support structure to a minimum.6 ...