Membrane circuit(flexible circuit) Beyond 10 years experiences in manufacture Best Quality Best Price Best Service Membrane switch(Flexible circuit,circuit keypad)Overlay Materials: The most commonly used base materials are polyester and polycarbonate.Rear Adhesive: 3M 467MP, 3M 468MP, etc.Standard Tolerances: +/-.010 inch.Matching color: Pantone and RAL color matching system.Tail, pin and ...