... part aluminum cooling fin,heatsink, radiator Extrusion or die casting aluminum ISO certificated MOQ:1000 Aluminum cooling fin ,CPU heatsink ,radiator, CNC ... Materials: Stainless steel ,cold rolled steel ,spring steel ,aluminum alloy, brass, bronze, copper, plastic ,POM, ... Shipment Terms/Lead time):TypePrecision CNC machining partMaterials:Aluminum alloy, stainless steel , brassMaterial GradeGB,ASTM ...