... panel, pu sandwich panel etc.FOB USD35/M2 warehouse steel project: inner steel structure, roof and wall : colored eps panel, pu ... panel is Galvanized & Pre-painted steel sheets, core material is 5 components Polyurethane glue, it is formed by heating, foaming & laminating. ... It is widely used as the wall or roof for cold storage, industrial workshop, public building etc.Products AssemblyThe panels ...