Flash was carried out by copper plating behind for coating according to the definition of the products or the ability to carry out the center of the production and processing, electroplating coating also can say the trainee on center into bottom plating, flash copper plating in order to better access port only loose to and even the relay for a professional skill of coating, to reach the product to the provisions of the coating according to appearance of the coating to the center of the coating after all. Such as acid copper, dark nickel or other plating as a center or base coating or expertise. Assuming that the surface coating of Fengxing aluminum is silver plating, it is more necessary to be properly thickened after flash copper plating, such as the use of acid and alkaline bright copper plating, and must be flash silver plating (or organic chemical silver plating) before entering the surface of the final coating. In the general professional skills introduced in this chapter, copper plating, nickel and other skills can be used as the central plating layer on aluminum plating.        

        The outer coating is also the intended coating required by aluminum plating, which can be indoor decoration coating, but also functional coating. As far as photoelectric electroplating is concerned, aluminum electroplating is mostly functional coating, and a small amount of outer parts have both function and home decoration effect. The coating for pure interior decoration is limited to the handles, knobs and identification plates on the frame.