... Durable,light weight ISO9001:2000 light steel prefabricated house 1)Steel mobile house, move easily and lower cost2)Various fire ... light and easily to installation . one 50 square meter house five workers 1-3days finished installation . save manpower , ... the materiasl of the wall and roof .so the house is good for fire proofing, water proofing, corrosion- ... 20 GP, 40HP, 40 GP, 40 OT Prefab House