Our factory operates under ISO9001 quality system for ensuring every step of manufacture under control and monitor, while all the manufacturing and testing data well recorded.
We do what we write, and write what we do.
We have passed the obligatory certification by government authority for making mining round steel link chains and various connectors, which are also evidenced by our supply to China main coal mine companies and groups for many years.
With 30 years round steel link chain manufacture, we have accumulatively achieved patented certificates covering chain making machines including link bending, welding, heat treatment, etc.
