Due to the good size of the 80 -level lifting chain, it is often used as the main component of the cable. When making a ring chain hanging, the chain needs to be connected with the powerful ring, unloading, hook, butterfly buckle and other components. Need other components through the chain and then fix the connection. Therefore, when the chain is made, the inner width of the chain is important. Inner width is not possible if the chain and components cannot be flexibly connected after other parts are connected. The inner width and compared chain are suitable for making cables.