Growing demands on productivity and quality combined with rising labor costs and a shortage of well-trained skilled workers are presenting China's industrial companies with new challenges. This is why the Zhengzhou Coal Mining Machinery Group Ltd. has commissioned 25 robot systems with a total of 52 welding robots for the production of hydraulic support shields over the past five years. By investing in the modern robot welding systems, Zhengzhou Coal Mining has been able to speed up the production processes by more than 50 percent overall and at the same time achieve precisely reproducible welding results.