This Pu sandwich board has decoration and heat preservation function.The surface is a high quality color relief veneer metal plate with special layer treatment, the middle layer is a rigid high density polyurethane foam thermal insulation layer with flame retardant treatment, and the bottom layer is an aluminium foil protective layer with thermal insulation, thermal insulation and moisture-proof function.Because the wallboard itself has the
characteristics of thermal insulation, waterproof and flame retardant, light anti-seismic, convenient construction, sound insulation and noise reduction, green vironmental protection, beautiful and durable, and because of its simple and practical plate assembly method, not limited by seasonal environment, so the installation and use is very safe and convenient,suitable for all seasons.This innovative exterior wall thermal insulation decoration board highlights its advantages.