Polyurethane (PU) is made up of many isocyanate and polyether polyol or polyester polyols and/or small molecules polyols, chain extender agent such as multivariate amine or water, or crosslinking agent made from raw materials such as polymers.By changing the species and composition of raw material, can greatly change the product configuration and performance, get the final product from soft to hard.Form has a soft, semi-hard and polyurethane rigid foam, elastomer polyurethane elastomer (TPU) for short, paint coating, adhesive, sealant, synthetic leather coating resin, elastic fiber, etc., are widely used in automobile manufacturing, refrigerator manufacturing, transportation, civil construction, shoe, synthetic leather, fabrics, electrical and mechanical, petroleum chemical industry, mining machinery, aerospace, medical, agriculture and many other fields.

More than 1937 German Otto Bayer, a professor at first found addition polymerization of isocyanate and polyol compounds can be made of polyurethane, and on this basis, into the industrial application, such as Britain and the United States in 1945 ~ 1947 polyurethane resin manufacturing technology from Germany in 1950 started the industrialization.Japan in 1955 from the German Bayer company and the United States DuPont company introduction of polyurethane industrial production technology.Got started polyurethane industry in China in the late 1950 s, the rapid development of nearly ten years.