... ordinary, high strength boltBoltSandwich panel or steel plateRoof &wallPVC or aluminum alloy doorDoorSliding or rolling doorInsulation panelEPS,XPS,Rock wool , PU ... , high strength boltBoltSandwich panel or steel plateRoof &wallPVC or aluminum alloy doorDoorSliding or rolling doorInsulation panelEPS,XPS,Rock wool , PU ... steel Sheet 0.5mm or 0.6mm galvanized sheet Prefabricated steel structure shed