TPU is thermoplastic polyurethane, which can be divided into polyester and polyether types. It has a broad hardness range (60A-85D), wear resistance, oil resistance, high transparency, and good elasticity. It is widely used in shoe materials, bag materials, sports equipment, medical equipment, the automobile industry, packaging products, wire and cable coating materials, hoses, films, coatings, inks, adhesives, melt spun spandex fibers, artificial leather, bonded clothing, gloves, air blowing products, agricultural greenhouse, air transportation, and national defense industry and so on.