Polyurethane blendAlso known as polyether rigid foam copolymer, it is one of the main raw materials for polyurethane thermal insulation materials. It boasts unique thermal insulation properties, high energy-saving efficiency, and environmental friendliness. It is referred to as the "black and white material" alongside the polymer black material. It is primarily composed of polyether, foaming agent, catalyst, and foaming agent.

This material is categorized by foam agent types into high-fluorine, non-fluorine 141b, and all-water types, with a form of light yellow or dark red, thick liquid. It boasts a low thermal conductivity coefficient, B2 flame retardancy, and excellent compressive strength, widely used for thermal insulation and cold preservation in construction, cold storage, pipelines, and solar energy equipment. Due to its low thermal conductivity and environmental-friendly characteristics, it has become a core material for green building thermal insulation systems, with a continuously growing market demand.