How to tell the true from the false: First of all, if it is genuine, you must have that kind of anti-counterfeiting label code or certificate, so that you can obviously find the basis. If you have this kind of security code, you can see it at a glance. Keychain is also called key ring, key ring, key chain, key hanger, etc. The key ring is made of metal, leather, plastic, rubber, wood and so on. It is a daily necessities that people carry with them, and the key ring is an ornament hanging on the key ring. Product use: They are elegant, small and exquisite, and the diversity of patterns is also made of rich imagination.