国内精品视频成人一区二区,中文字幕亚洲综合,九九热视频这里只有精品

Skirt board is installed between the guide chute and belt, and keep close contact with conveying belt, to prevent material spillage and dust emission from guide chute.
Made of PU or natural rubber, with good wear resistance and no damage on belt.
Potent’s products have been granted with coal safety signs and can be used in underground coal mine or other conditions with coal mine safety requirements.