1:precision --ABEC-3,ABEC-5 ,ABEC-7 2:full ceramic bearing or ceramic hybrid bearing 3:special requirements available The strong ability of manufactring the high quality ceramic bearings in China . We had the top bearings R&D engineer and skilled mechanician,you will select the best supplier !1:Our ceramic turbine bearings had reached to 150,000RPM ,mainly of them at least ABEC-5 precision .2:Our ...