Features: 1) Ceramic bearings have excellence performance as special electrical and magnetism resistance, wear and corrosion resistance, lubrication and maintenance free when working, high and low- temperature resistance etc. So they are suitable to be used in awful environment and special condition. 2) The rings and balls made of full ceramic material: ZrO2, SisN4 and Sic as a standard structure, the cage made of PTFE, GFRPA66-25, PEEK, PI, AISI US304, SUS316, Cu, etc. 3) Series available: single-row deep groove ceramic ball bearings, self-aligning ceramic ball bearings, single direction thrust ceramic ball bearings and angular contact ceramic bearings 4) Ceramic balls: all kinds of ceramic balls with the precision from G5 to G200, made of the material ZrO2, SiN4, SiC and Al2O3, etc.