午夜嘿嘿嘿影院_自拍少妇综合在线观看_波多野结衣喷水最猛一部_亚洲午夜一区二区在线观看_先锋影音国产在线_又大又黄又爽视频免费_4d玉蒲团奶水都喷出来了_老外一级毛片免费看_24国产欧美亚洲精品第二页_国产精品无码久久忘忧草

Contact Us

DC Fan ball bearings

Date: 2016-7-18   Click: 1494 Times

The main parameters "DC Fan" cooling fan including flow, pressure, speed, power, etc fan bearing system generally recommended best selection of ball bearing fan heat fan because life often depends on the reliability of its bearings, ball bearing system has been It has been shown to have high efficiency and low heat characteristics. Genus rolling friction ball bearing, rolling a metal beads, small contact surface friction coefficient; and oil bearing sliding friction, a large contact surface, after long-term use, the oil will be volatile, bearing easy to wear, friction coefficient, the larger the noise late , short life.

Back to: Industry news

+86-0769-83660708

Home Product News Contact