Flash went back, copper plating was carried out by h aluminium profile, in accordance with the standards of product solutions or skills in electroplating processing center coating, 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 and accept a skilled 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 can be used as a center or base coating. Assuming that the coating on the surface of the aluminum profile cabinet is silver plating, it is more necessary to make the appropriate thickness coating after the flash copper plating, such as the use of acid and alkaline bright copper plating, and must go through the flash silver plating (or organic chemical silver plating) before entering the surface of the coating. Among the general skills introduced in this chapter, copper plating, nickel plating and other skills can be used as the center of the plating process on aluminum. The outer coating is also the intended coating required by aluminum plating, which can be indoor decoration coating, but also functional coating. On photoelectric electroplating process.