... office,toilet,kiosk, shops ect.. single room,double room,with ensuite,with kitchen, two floors...heat insulation,wind and seismic resistance, ... Z-shaped galvanized steel Floor panel 18mm plywood panel+12mm laminated floor or 20mm cement-fiber +2mm PVC door Steel ... can be steel sheet, aluminum sheet;MDF.3) Roof, flooring and electricity system are all prefabricated before leaving factory.4) The steel ...