... sandwich panel include color-coated steel sheet, galvanized smooth sheets, stainless steel, galvanized steel sheet and PVC. The core materials include polystyrene, polyurethane ... , flame retardant paper honeycomb, rock wool, glass wool ect. The advantages of steel sandwich panel: 1. Light ... 50-200 Length(mm): Tailor made Width(mm): Wall panel 1200, 1150, 1000, 950; Roof ...