1)Miniature bearing. Chrome steel 2)605-6012,625-6215,6300- ... LTD is a deep groove ball bearing & Fan bearing & water pump bearing & Miniature bearing OEM manufacturer .As a specialized manufacturer and exporter for these product ... :Plain(Open),Z,ZZ,RS,2RS,UG.5)Vibration and Noisy level: Z1,Z2,Z3,ZV1,ZV2.ZV3.Z1V1 ... . 10)Certificates: ISO 9001,200011)Producing range : Standard and non-standard bearings .