The surface treatment of the lifting chain is polished, black, painted, galvanized and so on. However, most of the treatment only delay the rust of the chain, because most of the lifting chain will have friction or cross -wheel, or contact humid air. Although thermal zinc has good anti -rust resistance, it will affect the pull of the chain and have some impact on the environment. In terms of price, it is also higher than other processes, and it is not extensive in actual applications. The primary color is polishing, which is common in actual applications. The chain can be treated according to the different needs of the customer.