... through the ISO9001 certification. Product introduction : Item NameCustom precision brass components Material1.Stainless steel:303/304/316/412/etc2.Aluminum alloy ... coating5. Anodizing6. Polishing , Electroplate , Baking finish , Anodizing , OxidationOperationCNC machine , Lathe machine , Milling machine , Drilling machine , Planning , Grinding , Boring , Wire-electrode cutting ,and tappingQuality ...