OEM aluminum extrusion heat sinkApr 29,2017This is our new heat sink products.If you are interest in our heat sink, you can contact me by the below contact way:My e-mail: rq4@dgruiquan.comMy skype:heatsink61My whatsapp: 86 13609699895My mobile number: +86 13609699895Previous Ruiquan Hardware add new cold forging heat sink machine -3500 ton and 1000 ton.Next China refrigeration show in 2017-Ruiquan Hardware Electronics oem chinaheatsink for 14 years