1.easy to assemble and disassemble 2. good appearance 3.sound and heat insulated 4.Environmental protection Saving cost, insulation and strong, easy to assemble, 20years life span, wind and earthquake resistance.Prefab houseStructure: light steel or steel as main frame/structureInsulation material: sandwich panel (EPS, PU)Wall and roofs: sandwich panel, corrugated sandwich panel, asphalt ...