... America, etc.Production details:Hot seller computer heat hink aluminum die casting part Materialaluminum alloy A380,A360.ADC12,Zinc alloy 3#zinc,5#zinc and 7#zinc ... , CAD/CAM/CAE CertificateISO9001:2008, ROHS,SGSServiceOEM service availableProductsAll kinds of aluminum &zinc alloy casting: include automotive parts, railroad parts, medical parts, marine parts ...