Changzhou Suma Precision Machinery Co., Ltd
Changzhou Suma Precision Machinery Co., Ltd(Changzhou Tianniu
Clutch Factory) is a manufacturer specialized in Producing Various
backstop clutch, one way bearing, one way clutch, cam clutch,
overrunning clutch and other bearings with high technology.
The products are widely used in conveying machine, reducer, hoist,
elevator, automobile, home appliances, textile machinery, printing
machinery, food machinery and mine machines etc. In