... to customer' s requestmaterialsPolystyrene foam board(EPS), Color steel sheet,Rock woolStructureUpper and lower layer: Color steel sheetMiddle: polystyrene foam board or polyurethane foam ... , XPS,Rok wool, Glass wool,PU, PUR Surface materials: PPGI, GI, Stainless steel sheet, galvalume sheets, prinpia, PVC, and veneer2. Specification: (L ...