The thickness of the switch is more than 0.7mm, the service life is more than 1 million times, with good sealing: waterproof, dustproof, anti-harmful gas erosion. Design according to the overall requirements, color and pattern at will, the size and shape of the keys can be freely selected, characters, trademarks, display window can be arbitrary collocation. It also features low cost and long life. This kind of thin film switch is formed by surface PET, PC and other materials plane screen screen printing, and the upper and lower circuits are printed with conductive silver paste and combined into a circuit, coupled with 3M double-sided adhesive tape. A conductive outlet port can be fitted with a CONNECTOER and host terminal for easy assembly.