With the adjustment of cell size, micropore diameter, barrier layer thickness and other parameters of aluminum anodic oxide film, when the metal precipitates in the micropore, the composite anodic oxide film is formed, and its special properties are gradually affirmed. For example, properties such as heat absorption and magnetic recording were gradually discovered, and the use of anodized film's corrosion resistance and decorative properties was gradually developed to the stage of simultaneous use of its functionality. As a result, the scope of applications of anodized films has been expanded, 'naturally, a variety of commercial applications are possible.

The added value of the material can be significantly increased if the functionality of aluminum is added to its inherent lightness and ease of processing.

At present, the use of functional characteristics is still in the early stage, and the functional anodic oxide film is expected to be better developed and applied in various industries in the future.

The process is variable for different types of anodizing. The correct selection of anodic oxidation process is the premise of successful coloring. In recent years, due to the rising price of water and the rising cost of wastewater treatment, the water washing process has actually become an independent project. Still water washing, multiple water washing, countercurrent water washing and cleaning water recovery and circulation, etc. There are also several alternative sealing processes, including steam sealing, hot water sealing and cold sealing.