Carl Zeiss SMT GmbH comprises the Semiconductor Manufacturing Technology business group of ZEISS and develops and produces equipment for the manufacture of microchips. The company is fully owned by Carl Zeiss AG.The headquarters of the group are located in Oberkochen, Germany, with additional sites in the German cities Jena, Wetzlar, Rossdorf and in Karmiel, Israel. As of September 2013, the total workforce in the five sites is approximately 2,900.