西西4444WWW无码精品,国产一级一片免费播放放a,农村婬乱男女A片爽视频麻豆软件,亚洲AV无码国产毛片久久春色,蜜臀91丨国产人妻人伦图片

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.