Rm.605, Building 3, No.136 Chenshousi Road, Chaoyang District 100164 Beijing China Beijing, Beijing

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We professional all kinds of high quality bearing which with high speed and low noise.The main porducts includes:Water Pump Shaft Pivot Bearings,Punching Bearing,Clutch Bearings,Deep Groove Ball Beari...

No.169 Rear Street Xiaohongmen Chaoyang District Beijing China

Beijing North Star Yaao Scitech Co., Ltd. is a Hi-tech share-holding enterprise, which is specialized in developing and manufacturing oxygen concentrators. <br/> <br/>Yaa...