TPU raw material:Mitsui Chemical (century-old Enterprise, Fortune 500) Aliphatic stability super resistance to yellowing, no degumming, no cracking Stretchability:Strong tensile, strong stability No degumming, no cracking, comparable brand xpel,3M Coating:Hydrophilic coating Good stain resistance Glue: Ashland Glue , World Top 500 TPU has excellent propetties of high tension,high tension, toughness and aging resistance, and is a mature environmental protection material. TPU particel yellowing resistance grade into 5 levels, level 5 indicates basically no discolortation, below 3 will have obvious yellowing. TPU is divided into aromatic and aliphatic groups. We adopt aliphatic yellow resistance level up to 5