... , aluminium alloy, and etc.3. Process technics: Deburring, Drilling, Die casting,Tapping, Polishing, Sand blasting, Oil spouting,, Other technics available: CNC ... cutting, CNC grinding, casting, cold die casting, laser cutting4. Surface treatment: polishing, oil spouting Other treatmentavailable ... .www.jielimetal.com.cn Aluminum LED Heat Sink JL-CST-006