... manufacturer of Hydraulic machinery forging for REXROTH BOSCH GROUP, include internal gear ring, Provide Bosch ... , Bosch 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 other large-sized and medium-sized enterprises ...