... b. Passed ISO9001,ISO14001,RoHs c.UV resistance/flexible circuit board Membrane switcha. Overlay Materials: clear or matte polyester ... Pantone and RAL color matching system.d. LED, Metal domes,connect,and circuit layout can be designed and made according ... glossy/matte/textured, etc. Tactile membrane switch embossed LED and metal domes Performance:Electronic characteristicsCircuit rating35V(DC),100mA, ...