... )7DoorSteel security door9Windowaluminum alloy or PVC plastic steel sliding window13Channel beamsLight Steel. Galvanized or Painted14ColumnH-Profile Steel , Galvanized or Painted15Roof beamC-Beam , ... Dacheng Steel Structure Co., Ltd.Business scope: Container house, container homes, Steel structure house, prefab homes ,Prefabricated house, Sandwich panels, Corrugated steel sheets, Steel Coil ...