The city's economy features industrial machinery (Dagro Gera GmbH), communications (DTKS GmbH, Deutsche Telekom), security locks (Schloßsicherungen Gera GmbH), optics (POG Präzisionsoptik Gera GmbH), electrical equipment (Electronicon Kondensatoren GmbH), and margarine manufacturing (Othüna). Other companies include a compressor manufacturer (Kompressorenwerk Kaeser), a precision-tool maker (SMK-Präzisionsmechanik), and a subsidiary of the construction company Max Bögl. The e-commerce service-provider D+S Europe has a service centre in Gera with several hundred workers, and Rittal, a manufacturer of information-technology enclosures, moved from Bad Köstritz to Gera. Some industrial branches operating before 1990 no longer have major importance. Sectors either no longer existing or sharply reduced include those in toolmaking (VEB Wema Union), textiles (VEB Modedruck), textile machinery (VEB Textima), electronic equipment (VEB Elektronik Gera). Other industries that had a presence included VEB Carl Zeiss Jena and a brewery. One important industrial branch had been uranium-ore mining in nearby Ronneburg (Wismut), whereby the region became the Soviet Union's leading uranium supplier. In 2012 Gera had 41 companies with more than 20 workers in the industrial sector, employing 3,400 people and generating an overall turnover of €452 million.