ERZIA is a privately owned Spanish company with facilities in Santander, Spain focused on space qualified RF systems, acousto-optical drivers, and automatic test systems for spacecraft. It has two divisions: RF & Space Systems and Satellite Communications. RF & Space Systems provides microwave amplifiers, custom electronic modules, RF drivers, and automatic test equipment for spacecraft. It has experience providing systems for the LISA Pathfinder, ExoMars, and Chang'e 3 missions.