Color steel prefab house sandwich panel of EPS, PU, rock wool, fiber glass insulation layer are used for wall, roof, house, etc. 1) Upper and lower layer: uses color steel board, thickness: 0.3, 0.4 0.5, 0.6mm. Middle: polystyrene foam board or polyurethane foam board 2) Width: 980mm, 1,000mm, 1,150mm 3) Thickness: 40mm, 50mm, 60mm, 75mm, 80mm, 4) Length: according to customer's request