How to judge the quality of the lifting chain?

           First of all, the appearance of the lifting chain should be checked: the inspection should focus on whether the link pieces of the chain are deformed and cracked, and whether there is embroidery rot. Check whether the rollers are worn, damaged, missing, etc. In addition, you should also pay attention to whether the joint is deformed or cracked, etc. 

            The second is to check the accuracy of measuring the lifting chain: the chain length of the lifting chain tends to become longer and loose during use. If it exceeds a certain range, it is likely to cause