Aluminium led heatsink 1.RoHS,ISO9001,ISO14000 certificate 2.Casting ,extrusion,CNC( ... .25<0.3<0.13) Temper T3-T8 4) Surface Treatment 1.drilling 2.tapping 3.punching 4.wiredrawing 5.sand ... have Shenzhen Huowei, Zhongxing, Fushikang, Konka, Huizhou TCL, etc. Aluminium led heatsink