Keychain, also known as key ring, key ring, key chain, key hanging, etc.
The materials for making key chains are generally metal, leather, plastic, rubber, wood, etc.
This exquisite, small and ever-changing shape is a daily necessity that people carry with them.
The keychain is a decorative item hanging on the key ring.
There are many shapes of key chains, such as cartoon shapes, brand shapes, simulation models, etc.
The materials are generally copper, aluminum, rubber, plastic, etc., mainly zinc alloy surface nickel plating or rhodium and other anti-rust elements.
The keychain has become a small gift.