A chain is typically made of metal. Chains may consist of two or more links. Those designed for lifting, such as when used with a hoist; for pulling; or for securing, such as with a bicycle lock, have links that are torus shaped. Those designed for transferring power in machines have links designed to mesh with the teeth of the sprockets of the machine, and are flexible in only one dimension

Chains provide a measure of safety to your towing unlike any other piece of towing equipment. China LG offers a variety of chains, include Australia Standard Transport ChainDin 5685 A&C Short & Long Link Chain
Grade 30 proof coil chainGrade 43 High Test ChainGrade 70 Transport ChainGrade 8 lifting chainNACM Manchine ChainGrade 70 Binder Chain with Clevis Grab Hooks,etc.