we manufacture high quality crossed roller slewing ring bearings . if you have any requirment, pls let us know. We look forward to your favorable and prompt reply! thank you Best regards Sara Cui Sales manager Luoyang Xinshi Bearing Manufactuing Co., Ltd. No.1,,Tongyuan Building,Taiyuan Road,Luoyang City, Henan,China Tel:86-379-6491-0889 Fax:86-379-6439-2122 Msn:cuichangfan@live.cn Skape:saracui1 E-mail:sara_cui@yahoo.com Website:http://www.lyxszc.com