... toilet,kiosk, shops ect.. single room,double room,with ensuite,with kitchen, two floors...heat insulation,wind and seismic ... PVC door Steel door,740mmx1950mm window PVC Sliding window with Rolling shutter,1100mmx800mm electronics, water supply and drainage according to ... and electricity system are all prefabricated before leaving factory.4) The steel structure help the office resisting heavy winds ...