Colorbond sandwich panel is one kind of lightweight building materials, up and bottom material is color coating steel, aluminum zinc plate, stainless steel, galvanized board, or PVC surface, with interlayer in polystyrene, rock wool, glass silk floss, polyurethane, features of light, fire prevention to be new building materials. Sandwich panels have a lot of advantage like light weight, good sound insulation, good sealed performance, convenient construction, short project cycle, low& comprehensive cost, bending, corrosion, beautiful appearance etc. Colorbond composite panels have the following uses: building the villa, the industry factory, premises warehouse, the cold storage, the capsule, can be used in any buildings. Description: roofing sandwich panel Span width: 1000mm Effective Width: 980mm Material of Interlayer: EPS Thickness of EPS Interlayer: 50-300mm(usually 50/75/100/150mm Thickness of Corrugated Steel Sheet: 0.2-0.8mm Color of Steel Sheet: Any Colors(Usually white-grey, sea-blue and red) Length: Up to Customer's Choice Density of EPS Interlayer: 8-30KG/CBM.