Materials of prefabricated house: 1. Roof: 0.5mm color sheet, truss 2. Ceiling: 75mm EPS sandwich panel 3. Wall: 50mm EPS sandwich panel 4. Windows: Aluminum Window, single glass 5. Door: Sandwich panel door 6. Electrical and lighting, piping of plumbing and sanitary system. Steel prefab house used Light Steel Structural as frame work , Sandwich panel as Wall panel and Roof panel , The Steel parts connected by screw , easily install ,widely used for : Resident house (multi-bedroom) , Construction Accomodation , Office ,Classroom , Clinics , Oil Field Camps , Offshore accommodation , Labor Camps ,Guard Houses , Container house , Mobile house . fast manufacture , easily installation , lower cost and save manpower , suitable for remote area.