Professional manufacturer of Hydraulic machinery forging for REXROTH BOSCH GROUP, include internal gear ring, Provide Bosch Rexroth internal ... hardness testers from America.Our customers include Sino-truck, Bosch Rexroth, Kerui Group, Dezhou United Petroleum Machinery, Jier Machine- ... tool Group Co., Ltd., Shantui Construction Machinery, Beijing Baoji ...