Profile: MMI Ltd specializes in offering membrane switches, front panel assemblies, graphical overlay fascia panels, electroluminescent lamps, industrial graphics, flexible circuits and keyboard assemblies. All our membrane switch graphical overlays & fascia front panels are under surface printed for durability and performance. It is available with a range of surface finishes from full or selective texture, gloss, matt, satin & velvet which can all be scratch resistant along with display windows, secret until lit filter colors and tints. Electroluminescent lamps (EL) is a solid state phenomenon in which semiconductor crystals, known as phosphors, convert electrical energy into light. They are flexible and durable which allows them to be bent around simply planar curves along with allowing button pressing within in a membrane or similar type switch.