Computer USB connector 1.Smooth surface,burr-free 2.High precision,good ... , Japan, Europe and America, etc.Production details:Zinc casting computer USB connector part Materialaluminum alloy A380,A360.ADC12,Zinc alloy 3 ... .black oxidation.SoftwarePro/E, Auto CAD, Solidwork, CAXA UG, CAD/CAM/CAE CertificateISO9001:2008, ROHS,SGSServiceOEM service availableProductsAll kinds of aluminum ...