The 80 -level lifting chain uses 20MN2 alloy structure steel. It consists of metal elements such as carbon, manganese, chromium, copper and other metal elements. So the chain will rust. We know that rust is a chemical reaction. Metal contact air and water are easy to rust. Therefore, we must keep the environment dry when we store the storage chain. There is also a different surface treatment for the chain to delay the chain rust. Different surface treatment looks different. Of course, the price is also different. It can be made according to the customer's requirements.