1.Step roller and other CNC parts 2.Material:as customer's need 3.CNC & aotomic machines 4.Strong parts processing capacity 1. We produce chain components ( including roller, bush, pin, etc. ) for the OEM manufacturers over the world.2. The product in the picture is step roller.3. We have automic machines, bench lathes, grilling head lathes, grinding machines, CNC machines, etc.4. We have strong ...