... panel (EPS, PU)Wall and roofs: sandwich panel, corrugated sandwich panel, asphalt tileWindows and doors: UPVC or aluminum ... is 0.546w/ m².k.8Roof boardcolor steel corrugated sheet, 0.5mm thickness9Outside doorSecurity door, single door with ... steel tube Material: Q235. Painted17Decoration and connectioncolor steel sheet, 0.35mm thickness18OptionDecorative floorPVC, laminated or ceramic tile19Drainage ...