| 4. | Auto chain makers , high - frequency thermal processing devices , gas carbonnitriding furnaces , cn lathes , nc ball lathes , cnc hobbing machines , nc milling machines , amsler universal testers , three - dimensional measuring instruments , hardness testers 自动制锁机,高频率热处理装置,气体渗碳氮化炉, cnc车床, nc轴承车床, cnc滚铣刀床, nc铣刀床,伸缩臂型万能试验机,三维测量器,硬度试验机 |