Polyurethane is also called microfiber leather, quality is better than PVC (commonly known as the Sipi). Such materials are widely used clothing manufacturers produce clothing, commonly known as leather clothing. Also good to use more imported PU leather bag. PU leather with its opposite is a second layer of skin leather material, the surface coated with PU resin, also known as foil leather. Its cheaper, high utilization. Its technology is also made changes with various grades of species, such as import leather floor, due to the unique technology, stable quality, variety of new features, is considered high-grade leather, price and quality are inferior to the first layer of the dermis. PU leather and leather bags have their own characteristics, PU bag beautiful appearance, good care, lower prices; leather is expensive, take care of the trouble, and durable. In addition, many steel plants, cold storage and other industrial plants are made of polyurethane foam made of insulated sandwich panels, flame retardant polyurethane composite sheet have good thermal insulation and fire-retardant effect. Also polyurethane material used in construction is also a large number of external insulation materials.