... foam board(EPS), Color steel sheet,Rock woolStructureUpper and lower layer: Color steel sheetMiddle: polystyrene foam board ... in weight, heat insulation, water resistant, green and environmentalUsevarious roofs and walls referring to the large size factory buildings ... wool,PU, PUR Surface materials: PPGI, GI, Stainless steel sheet, galvalume sheets, prinpia, PVC, and veneer2. Specification: (L*W* ...