· Independent brands' contrarian growth is mixed

Hot sales are not the same as profit, and the big names of their own brands have already learned. What they are trying to achieve is a real take-off by the power of independent brands to grow against the trend.
“We can't catch up with the joint venture brand within ten years........

Lathe hydraulic vibration tailstock device

The use of the device for vibration drilling is described.

It includes a tailstock body, a sliding sleeve, a tailstock screw and a hydraulic vibration device.

The hydraulic vibration device is composed of a hydraulic station, a reversing valve, a cylinder, a follower piston .......