Flexible printed circuits, as known as flex circuits or FPC, usually use polyimide as a base plate and use copper foil for printed circuits.

A printed Flexible Circuit is sometimes regarded as a printed circuit board (PCB) when in reality there are significant differences between PCB and flex circuits when it comes to design, fabrication, and functionality.

Compared with traditional PCB, FPC has extremely high flexibility, which makes it naturally suitable for circuit interconnection in many areas, for example, membrane switch flat cable connection.

Custom-made membrane products also belong to Flexible Printed Electronic, among them, Kaike Electronics are professional at membrane switch and Indium Tin Oxide (ITO) transparent touch switch.