Hanyi board, a new lightweight building material developed in recent years, is embossed by al-zinc coated steel plate with many designs as the brick veined, stone veined, ripple veined and ceramic tile veined, etc. It has 7 special resin coatings and more than 50 colours to choose from. Further more, we guarantee that the colour would remain vivid more than 10 years. The polyurethane foam forms the thermal insulation layer in the middle of Hanyi board and inside of the polyurethane foam is an independent and hermetic bubble structure. On the opposite side of the board there is aluminium foil paper affixed, which could effectively reflect the heat source so as to play the role in thermal insulation and damp-proof. The combination of concavo-convex and groove-fastening connection methods makes construction more easily. Hanyi board is a new type of building material that embraces many outstanding performances such as high anti-pressure, anti-seismic and damp-proof ability, low heat transfer coefficient, attractive appearance, energy conservation, simpleness and convenience in construction. Thus, it is extensively used in exterior wall thermal insulation and indoor decoration.