The purpose of the ball bearing is to determine the relative position of two parts (usually the shaft and the bearing seat) and ensure their free rotation, while transmitting the load between them.
The application range of deep groove ball bearings is very wide. They are suitable for low-speed, high-speed and ultra-high speeds, adapt to radial and axial loads in both directions, and require little maintenance. Deep groove ball bearings are widely us
With the introduction of new makeup products and the demand for brushes for different uses, the demand for plastic beauty brush packaging box is obvious.