Polyurethane composite material is divided into isocyanate and blended polyether , commonly known as black and white materials. Polyurethane rigid foam plasticsare obtained by polymerization reaction after mix both in proportion . 

Polyurethane rigid foam is an ideal low temperature insulation material. It can be prefabricated or sprayed. Widely used in refineries, chemical plants, cold storage, refrigerators and construction industry insulation.