... 1,precision stamping metal parts with grinded surface 2,customized sureface treatment 3 ... seat, spring, connector, socket, bushing, push-button, etc.Surface Finishannealing, natural anodization, heat treatment, polishing, nickel plating, ... , broaching, welding and assemblyAdvantages 1. Competitive price with high quality 2. Low MOQ 3. Short lead ... . precision stamping metal parts with grinded surface