3 Bearing very good circuit-adjusting function and accurate controlled value of handwheel.
3 Bearing very good circuit-adjusting function and accurate controlled value of handwheel.
3具有良好的流量调节功能和精确的手轮开启量指标。
3 Bearing very good circuit-adjusting function and accurate controlled value of handwheel.
3具有良好的流量调节功能和精确的手轮开启量指标。