... CNC lathe, milling machine, 3 meters gantry planer, grinding machine, etc. and there are gear-processingequipments for rolling, inserting, shaving ... feature product and there are spiral-milling machine, lapping machine, and inspection machine, etc.5. The heat treatment is ... furnaces, cabinet normalizing furnaces and high frequency treatment equipments.6. The test method is perfect, and wins national ...