Johannes Ringel

Portigon AG engages in the management of its own assets. It also provides financial services and conducts banking activities. The company was founded in 1969 and is headquartered in Duesseldorf, Germany.

Hüttenwerke Krupp Mannesmann GmbH is a steel manufacturing private company based in Duisburg-Huckingen, Germany. The CEOs of the German company are Herbert Eichelkraut, Gerhard Erdmann, Carsten Laakmann. The company specializes in the production of steel and precursors for the processing industry.

RUETGERS Chemicals AG manufactures plastics, chemicals, and binding materials used in electronics and automobiles. It specializes in the manufacture of basic and specialty chemical products. The company manufactures industrial chemical products such as aromatics, petroleum products, organic intermediates, and pharmaceuticals. The company was founded in 1964 and is headquartered in Castrop-Rauxel, Germany.

RWE Energy AG supplies gas, water and electricity in Germany and continental Europe. Its territory includes Austria, the Czech Republic, Germany, Hungary, Poland and the Netherlands. It provides services to residential households through SMEs, industrial companies, municipal utilities on to regional energy utilities. The company is headquartered in Dortmund, Germany.

STEAG GmbH engages in the planning, development, construction, and operation of power plants and storage facilities. Its services include conventional power generation, energy trading and optimization, district heating, as well as distributed generation. The company was founded in 1937 and is headquartered in Essen, Germany.

thyssenkrupp Steel Europe AG manufactures carbon steel, stainless steel, and special steel materials. Its products include hot and precision strips, heavy plates, sheet and coated products, organic coated strips and sheets, composite materials, electrical steel products, tinplates and black plates, and medium-wide strips. The company was founded in 1997 and is headquartered in Duisburg, Germany.