Membrane Switches, Printed Circuitry, Graphic Overlays, and Custom labels. Headquartered in the heart of Minneapolis, Golden Valley Products has been a recognized manufacturer to the medical and industrial OEM markets since 1973. Specializing in custom printed user interface components that include membrane switches, thin film potentiometers, sensors, graphic overlays, keypads, nameplates, labels, printed on parts, and 360 degree pad printing. That's not all! GVP has an in-house design team that can help you with your design from concept to completion!