... Professional manufacturer of Hydraulic machinery forging for REXROTH BOSCH GROUP, include internal gear ring, Provide Bosch Rexroth ... labs recognized by the State are equipped with advanced spectrographs imported from Germany, and Brinell hardness testers ... Sino-truck, Bosch Rexroth, Kerui Group, Dezhou United Petroleum Machinery, Jier Machine-tool Group Co., Ltd., Shantui Construction Machinery ...