Material used rigid polyurethane or polystyrene foam insulation sandwich, one time high-pressure perfusion molding foam process, can be made in various lengths and specifications. Its characteristics are: "Good insulation performance, lightweight, high strength, corrosion resistant, anti-aging, beautiful appearance." Specifications 1. Panel width: 960mm, 980mm, 1150mm 2. Thickness: 50, 75, 100, 150, 200 mm 3. Length: According to project and transportation requirement 4. Color: According to project requirement (RAL Color) 6. Variety: H-beam (flat sheet, profiled sheet), matchboard, corrugated sandwich panel Types are: Color steel, salinization steel, stainless steel, aluminum embossed.