91精品91久久久中77777,成人免费A片在线观看直播96,特级婬片A片AAA毛小雪,亚洲国产精品久久,午夜一区二区三区

The springing ball of rotary screen is an indispensable part of the rotary screen. When the rotary screen is working, it is constantly bouncing up and down under the force of the punching plate, and repeatedly knocking on the screen, so as to help achieve the purpose of cleaning the screen and improving the mesh penetration rate.

The size of Silicone bounce is φ 10, φ 15, φ 20, φ 25, φ 28, φ 30, φ 40, etc.