Anodizing aluminum heat sinks
Anodizing is a very common and important processing in heat sink building, it can protect the heat sink from oxidation. Usually we put the heat sinks into the pool with chemical and then the aluminum heat sink will have the chemistry reaction with the liquid, then we dry the heat sinks in the oven and packing for shipping.
Usually the most common is black anodizing or white anodizing, if customer want some other color anodizing, it's all right for customizing. below is our samples of anodizing aluminum heat sinks.