Currently the most used materials are PU and TPU.PU and TPU belong to polyurethane film, soft, with strong toughness, wear and weather resistance, excellent tensile, anti - UV polymer, anti - yellowing.It can insulate the car paint from air, prevent acid rain, oxidation and scratch, and protect the car paint for a long time.At present, the best invisible car clothing material is TPU, which is an updated version of PU and belongs to thermoplastic polyurethane. Besides all the advantages of PU, it also has higher brightness and incredible scratch repair function.