▎ 摘　　要

NOVELTY - The chain has a chain sheet (1) whose lower end is fixedly connected with a tail chain stopper (4). The chain sheet is connected with the tail chain stopper, which is connected with multiple fixed chain teeth (31). The fixed chain teeth are connected with a fixed chain block. An end of the fixed chain block is fixedly connected with a lubricating layer. A movable chain block is filled with developing liquid and is placed with multiple reinforcing floating rods. An L-shaped cavity and a powder outlet hole are connected with each other. A through cavity is provided with a pneumatic curing layer. One end of two movable chain teeth close to each other is opened with multiple powder outlet holes. A through cavity is provided with a pneumatic curing layer. USE - The Zipper (RTM: Slide fastener) is useful for releasing chain. ADVANTAGE - The Zipper (RTM: Slide fastener): improves speed and efficiency of releasing the chain, and convenience of the user; overflows graphene powder in the movable chain block by a certain extrusion force when pulling the Zipper (RTM: Slide fastener) head or swinging free chain group; achieves the effect of lubricating and maintaining the fixed chain tooth and the movable chain tooth; and efficiently pulls the convenience when the long-path large-chain gear. DESCRIPTION OF DRAWING(S) - The drawing shows a front structure of the free chain zipper for releasing chain. Chain sheet (1) Tail chain stopper (4) Fixed chain teeth (31)