KNBO modified PU composite metal exterior wallboard consists of three parts; the surface is high quality color relief metal plate treated by special coating, the middle layer is rigid high density polyurethane foam heat insulation layer treated by flame retardant, and the bottom layer is aluminum film protective layer which plays the role of heat insulation, heat insulation and moisture proof. KNBO exterior wallboard itself has the characteristics of thermal insulation, waterproof and flame retardant, lightweight anti-seismic, convenient construction, sound insulation and noise reduction, green environmental protection, beautiful and durable, etc. At the same time, it is very safe and convenient to install because of its simple and practical board assembly mode, which is not limited by season.

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