... MaterialBrass, Copper, Carbon steel, Stainless steel, Steel alloy, Aluminum alloy Surface TreatmentZinc plating,Nickel plating,chromate plating,anodize as per ... Measuring Machine ,6) Roughness tester , 7) routine inspection of calipersPreferred Drawing FormatsJPEG, PDF,CAD,IGS,STPPreferred Industries1) Communication Equipments2 ... activities Shenzhen factory custom cnc machined parts made of aluminum