... zinc plated,black,etc 4.flat,pan, etc. cnc machined aluminum parts 1.Surface Finish: annealing, natural anodization, heat treatment, polishing ... of years technical experiences, we are engaged in the hardware for many years,we have been in constant pursuit ... to smile to each customer1)Details: Product name cnc machined aluminum parts Material1.Stainless Steel: SS201, SS303, SS304, SS316, SS416, ...