... ,powder coated Cut,punch,drill ISO9001,SGS,ROHS aluminium cooling fin 1. Material: 6063,6061,6060,6005 or other2. Temper: T5 ... 4. Various colors: Silver,bronze,black,gold,blue,grey,champagne,red,etc. 5. Machining: Cutting,punching,drilling,milling,bending,welding,CNC ... requirements. 9. OEM service available, customized design available aluminium cooling fin