... certificate 2.Extrusion,drill,cnc,sandblasting+anodized 3.Material:6063 Aluminium heatsink machined1) Alloy 6061,6063,6063B,6060,6005,6N012) Alloy chemical ... customers have Shenzhen Huowei, Zhongxing, Fushikang, Konka, Huizhou TCL, etc. Aluminium heatsink machined