... SS304, SS316, SS416, SS4202. Steel:C45(K1045), C46(K1046),C203. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000 ... ),gears (pinions, wheels ) bearing, bearing seat, spring, connector, socket, bushing, push-button, etc.Surface Finishannealing, natural anodization, heat treatment, polishing ... and chemical elements according to your request Metal processing machinery parts