The circuit board needs to be processed and shaped, and there are two processing methods. One is processed on a milling machine, also called gong, and the other is punched. This process needs to make molds, and making molds is called mold opening.

At present, the processing methods are CNC gong and die punching. The numerical control gong is to set the relevant required size through the computer and let the machine complete it. Punching is to make a good mold and punch it into the required small plate with a punch.