... BOSCH GROUP, include internal gear ring, Provide Bosch Rexroth internal gear ring, planet carrier, gear output shaft, rear ring, back shaft, hydraulic jack ... 1T/750kg board drop hammers, various types of air hammers, 12 sets of normalizing furnaces, electrical stoves and 10 sets of ... technology, strict management, and high-quality service. Hydraulic Internal gear ring forging for (REXROTH BOSCH GROUP)