1,Material: steel,stainless steel,aluminium, brass 2,customized sureface treatment 3,High QC standard 4, ... shafts),gears (pinions, wheels ) bearing, bearing seat, spring, connector, socket, bushing, push-button, etc.Surface Finishannealing, natural anodization, heat treatment, polishing ... distance between Europe and China. steel stamping parts, stainless steel, aluminium, brass all can be stamped