Overlay Materials: The most commonly used base materials are polyester and polycarbonate. Rear Adhesive: 3M 467MP, 3M 468MP, etc. Standard Tolerances: +/-.010 inch (+/-0.25mm). Matching color: Pantone and RAL color matching system. Tail, pin and circuit layout: subject to customers’ detailed requests. Type of Switch: a) Non tactile b) Tactile graphics c) Tactile with stainless steel domes d) Tactile with poly domes on the circuit Notice: We have the capacity to provide you