... of menbrane circuit board. 1. Materials: The most commonly used base materials are polyester (PET) and polycarbonate (PC). 2 ... etc. 3. Matching color: Pantone and RAL color matching system. 4. Tail, pin and circuit layout : subject to ... : Membrane circuites produced by Suzhou menhow are widely used in controlling system, measuring apparatus,electrical home appliances, instrument , communication, ...