Younda board is a new type of light weight building material. It has various embossing designs, such as brick textured, stone textured, and water textured on surface. It is painted by special resin paint 7times and has more than 50colors to choose, and guarantees non fading more than 20years. there has a polyurethane foaming heat preserving and heat insulating layer inside it is independent airtight bubble structure. the aluminum foil pastes on back side, can take heat insulating heat preserving and damp proofing effectively with reflecting the heat source. and it is very easy to construct.