The flexible circuit board and the rigid circuit board are combined together according to the relevant process requirements after the process of pressing and forming, to form a circuit board with FPC characteristics and PCB characteristics.FPC is a highly reliable and flexible printed circuit made of polyester film or polyimide as a substrate. By embedding a circuit design on a flexible thin plastic sheet, it can be narrow And a large number of precision components are stacked in a limited space to form a flexible circuit that can be bent.