The keychain is a decorative item hanging on the key ring. It is exquisite and small, with ever-changing shapes. It is a daily necessities that people carry with them every day. Choosing a keychain with your favorite keychain can not only reflect your personal mood and personality, but also show your own taste, but also bring you a happy mood. There are many keychain shapes, such as cartoon shape, brand shape, simulation model, etc. The materials are generally zinc alloy, copper, aluminum, rubber, plastic, etc., and are often used for corporate brand promotion, new product promotion, tourist attraction souvenirs, Commemorative promotional items for school celebration souvenirs, advertising and other industries.