... zinc plated,black,etc 4.flat,pan, etc. cnc machined aluminum parts 1.Surface Finish: annealing, natural anodization, heat ... gold passivation, galvanizing, satin, etc.2.Processing Method: cnc machining, turning, milling, drilling, grinding, broaching, welding and ... cnc machined aluminum parts Material1.Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS4202.Steel:C45(K1045), C46(K1046),C203.Brass: ...