... , 33000,6000,6200,6300,6400,51100,51200,51300, Inch and metric series etc.MaterialChrome Steel ,GCr15,Carbon steel,Stainless steelNoise ... Company Profileqinngdao rich Bearing Manufacturing Co., Ltd. is a specialized enterprise for the production of tapered roller bearings ... of transportation, the company has formed a complete system of production, marketing and service. ContactsTel: 86- 532-83051115Fax ...