... shafts, dart shafts),gears (pinions, wheels ) bearing, bearing seat, spring, connector, socket, bushing, push-button, etc.Surface Finishannealing, natural ... , welding and assemblyAdvantages1. Competitive price with good quality 2. Low MOQ (200pcs is even acceptable in some special conditions) 3 ... and chemical elements according to your request High quality and have a certificate hardware products