Definition of keychain

Keychain, also known as keychain, key ring, key chain, key hanger, etc. The materials for making keychains are generally metal, leather, plastic, rubber, wood, etc. This object is exquisite, compact, and ever-changing in shape. It is a daily necessities carried by people. A keychain is a decorative object hanging on a key ring.

Keychains have many shapes, such as cartoon shapes, brand shapes, simulation models, and even CPUs. The materials are generally copper, aluminum, rubber, plastic, etc., mainly zinc alloy surface nickel or rhodium and other anti-rust elements. The keychain has become a small gift.