Professional manufacturer of Hydraulic machinery forging for REXROTH BOSCH GROUP, include internal gear ring, Provide Bosch Rexroth internal gear ring, ... Petroleum Machinery, Jier Machine-tool Group Co., Ltd., Shantui Construction Machinery, Beijing Baoji Machinery, Liuzhou Engineering Company Limited, and many other large ... service. Hydraulic Internal gear ring forging for (REXROTH BOSCH GROUP)