... BOSCH GROUP, include internal gear ring, Provide Bosch Rexroth internal gear ring, planet carrier, gear output shaft, rear ring, back shaft, hydraulic jack ... various types of air hammers, 12 sets of normalizing furnaces, electrical stoves and 10 sets of well-type stoves. We have advanced ... , strict management, and high-quality service. Hydraulic Internal gear ring forging for (REXROTH BOSCH GROUP)