low price Extrusion Heat Sink Product Specification MaterialCopper, brass, aluminum, steel, stainless steel, etc. Surface TreatmentFuel injection, anodizing, and so forth. ProcessingDrilling, tapping, deep drawing, laser cutting, CNC machining, assembly, shearing, and other processes. CertificateISO 9001, SGS, material certificate Drawing FormatCAD, DWG, SLDDRW, IGS, STP, SLDPRT, PDF...