... :2000 Quality Control System Attestation.1.Material:Stainless steel,brass,aluminum,bronze,carbon steel,alloy steel,hard alloy,etc2. ... ,chrome,sliver,polishing,heattreatment,powder coating,etc3.Machining facilities:CNC lathe,CNC auto lathe,Thread rolling machine,drilling,Centreless grinding machine, Manual ... to visit our factories for business negotiation and cooperation. precision CNC machining part