... grinding, knurling, honing, painting, printing etc. Materials Stainless steel, Brass, Bronze, Aluminum, Steel, Copper, Plastic... Finish Zinc,Nickel,Chromate,CopperTin plating, Passivate ... ,Engraving,Grinding,Cutting,Stamping,Lasering Boring,Broaching,Drilling,Rolling,Punching,Aluminum Extrusion