The 80 -level starting chain refers to the chain of the ring chain with a level 80. Many lifting equipment can use the lifting chain. Such as lifting gourd, lifting crane, and so on. The chain is widely used as a load -bearing chain and power conduction chain. The choice of the lifting equipment is because its loading capacity is good. Compared with the same weight of the wire rope, the chain volume is smaller. The lifting equipment is usually used to improve the weight. With the development of social industry, the application volume of the lifting equipment has also increased. Then the number of chains of the main component has also increased.