Changzhou Suma Precision Machinery Co., Ltd was established in 2005, which was a professional and non-stop manufacturer for mechanical parts, integrates into R&D, Design, Manufacturing and Sales .

The main 6 Catagories are :

One Way Clutch Bearing: CSK, ASNU, AS , NF, FE, DC, FWD, BWC, AXK, AA, B200, BB, CKA, ...
Backstop Clutch : BS, MZ, FSO, HPI, PB, BS...R, NJ, NYD, NF, CKZ, RSBW, AV , ...
Overrunning clutch: FXM, GFR, RSCI, RSXM, CKL-A, CKF-A, RSBI, GFK, GV, GVG, BSEU, ...
Needle Roller Bearings: HF,HFL, RC, RCB, FC, FCB, OWC, EWC, 1WC, HK, SCE, BCE, IR, ...
Cam follower bearings : CF, KR, CFE, CFH, CYR, CYR...S, NATV, NATR, NUTR, KRV, RSTO, ...
Spherical Plain Bearings : GE, GE...ES-2RS, GE...DO-2RS, GEG...ES-2RS, GEEW...ES-2RS, GE...UK-2RS, GE...ET-2ES, ...