黄色视频免费观看,西西西444www无码视,中文字幕无码在线,强伦轩人妻一区二区电影,四lll少妇BBBB槡BBBB

Overview

The punching plate is an important part of the rotary vibrating screen. It gives certain force to the bouncing ball and the isolation frame when the rotary vibrating screen is working, so that the bouncing ball and the isolation frame keep jumping up and down, and knock the screen repeatedly, so as to achieve the purpose of cleaning the screen and improving the penetration rate. Its material is mainly stainless steel and ordinary carbon steel.