HPPU foam is composed of polyurethane resin and foaming agent, and the foam structure is generated through chemical reaction. This foam can have different densities and hardnesses, which can be adjusted according to the required performance. HPPU foam has very low thermal conductivity, which can effectively insulate heat transfer, improve energy efficiency and reduce energy consumption. As thermal insulation material used in wall, roof and floor systems to improve the energy efficiency of buildings.Used for filling and sealing of building cavities to enhance the stability and sound insulation of structures.