The light gauge steel framing system and waterproof design has reached the requirements of design of building structure.The light steel frame building has good anti-seismic property, which could reduce the loss resulting from the earthquake disaster. Besides, the light steel frame building could increase the usage area of house and reduce the whole height of the building. The energy efficient buildings have features of simple installation, and short construction period. The construction materials could be used for a long time. This is also the reason that mobile home manufacturers are promoting the energy efficient buildings.