• Since its establishment,ZheJiang NingBo CHNB Bearing CO.,LTD.is devoted to research and development in the field of precision bearings.Products have excellent characteristics of low vibration,less noise,high turning speed and long service life and so on,which enjoy good reputation among customers.Products are widely used in gearing field...

    • Bearings use matters needing attention
    • Rolling bearing is a precision components, its use must be carefully. Regardless of ...
    • Failure and failure reasons
    • Because the rolling bearing structure and the use of different, leading to its failure reason of...
成人免费无遮挡在线播放,男主在女主的裙子里做H,CHINESE鲜嫩GAY台湾,公交车上嗯～啊用力啊H