... .( skype:daijinhuo qq:2306544790 icq: 612867057)Aluminum heat sink 1.RoHS,ISO9001,ISO14000 2.Casting ,extrusion,CNC(milling ... Different surface treatment 4.ISO9001,ISO14000 certification.Aluminum heat sink use way:heat dissipation. 1.Material:Al6061,Al6063 ect ... :T5,T6 etc. 3.Processing:Extrution,cutting,CNC(Milling),Anodizing. 4.Surface treatment: including cutting, milling, turning, drilling, tapping, ...