Volker Kefer

VDI Verein Deutscher Ingenieure eV operates as an association which supports, promotes, and represents engineers in their field of work. It provides a venue for knowledge transfer, interdisciplinary cooperation, and promoting the specialized knowledge of engineers through statements, hearings, and political events. The company was founded on May 12, 1856 and is headquartered in Düsseldorf, Germany.

Georgsmarienhütte Holding GmbH operates as a renewables and environment company. It focuses on the mobility, energy, and engineering industries. The company was founded by Jürgen Grossmann on October 1, 1997 and is headquartered in Georgsmarienhuette, Germany.

Kranbau Köthen GmbH is a private company based in Köthen, Germany. Kranbau Köthen GmbH specializes in manufacturing lifting and handling equipment. The German company was founded in 1934 by Carl Gensel and is currently led by CEOs Sebastian Zahn, Oliver Nitzsche, and Volker Kefer.

GMH Krantechnik GmbH provides investment services. The private company is based in Koethen, Germany. The German company was founded in 1998. The CEO is Volker Kefer.

DB Netz AG manages and maintains railway infrastructure networks. The firm operates as a service provider for railway undertakings and necessary installations. It focuses on the compilation of timetables and the repair and maintenance of the rail network. It also engages in investments in the existing network, in modern command and control technology, and in plans for building new lines and upgrading old ones. Its product portfolio consists of train paths for passenger and freight transport and of service installations necessary for the preparation, post-processing, and operation of train movements. The company was founded in 1998 and is headquartered in Frankfurt, Germany.

DB Energie GmbH provides energy supply and management services. The firm focuses on railway power supply, electric supply, gas distribution, energy conservation, and technical support operations. Its service areas encompass energy data monitoring, network management, and infrastructure development and maintenance. The company was founded in 1997 and is headquartered in Frankfurt, Germany.

DB Mobility Logistics AG provides logistic services. It offers logistic solutions to the transportation, chemicals and materials sectors. The firm provides freight and passenger services. The company is headquartered in Berlin, Germany.

Siemens Transportation Systems SAS is a company based in Chatillon, France. The French company was founded in 1991.