... ,nylonVibration Level: V1,V2,V3,V4Feature: low noise,high speed,long life .durableClearance: C0,C1,C2,C3,C4Certificate: ISO9001:2008Service: ... solve lots of problems. FAQQ1:Are you manufacturer or trading company?A: Wuxi Shenxi Bearing Manufacturing Co.,Ltd is specialized ...