The product range includes balanced armature receivers, high-end microphones and electromechanical components for the hearing instruments and high-end audio headsets. One of the major components in these hearing devices needs to have a thin gold coating layer. Our gold coating systems need to have a maximum reliability as they are in operation 24/7. Pumpdown time from Atmospheric pressure to 5.10 e-6 mBar takes only 30 minutes. At this pressure the gold coating will start.