... forging parts in China. We produce forging parts for petroleum machinery , hydraulic machinery forging, construction machienry, mining machinery and so on.Founded in 1969, Zhangqiu ... Rexroth, Kerui Group, Dezhou United Petroleum Machinery, Jier Machine-tool Group Co., Ltd., Shantui Construction Machinery, Beijing Baoji Machinery, Liuzhou Engineering Company Limited, and many ...