The code and encoding will appear. As a patented product of Germany's Bayer Company, Delon will be licensed to cooperating manufacturers. The clothes will have an exclusive hangtag authorized by Delon. There is also an exclusive authorized QR code on the back of the hangtag. After scanning the code, the code and code will appear for verification. Authenticity, DeRong is a kind of chemical fiber fabric with a relatively complex composition. The main component is acrylic fiber, and there will be a certain proportion of polyester and spandex blended in it.