1.Standard:SGS and ISO 2.Material:Copper, iron,aluminum 3.Grade:6063/6061/6005/6060 4.Design from drawing. Thank you for clicking our product,And if this product couldn’t meet your requirements or if you have any other needs,Please visit our website(http://szjingbang.en.alibaba.com/index.html ),Also you can click the trademanage to contact us.Aluminum heatsink1.Surface Finish: Mill finish, polish ...