免费观看在线高清电视剧快剧屋,在线视频免费观看,亚洲色大成网站www,本道久久综合无码中文字幕

Sprocket 1-3

After years of analysis on the failure of imported sprockets after use, our company has designed Heli-standard tooth profile to reduce wear and improve the service life of the sprockets. At the same time, the bearing capacity is increased. Our company has also taken the lead in developing maintenance free sprockets in China. During the use of the sprockets, there is no need to replenish lubricant for at least one year.