Christiane Petersdorff

Pfeiffer Vacuum GmbH develops, manufactures and markets components and systems for vacuum generation, measurement and analysis. Its products include pumps such as rotary vane, roots, diaphragm, side channels, piston, screw, turbo pumps, valves, helium detectors, mass spectrometers, and components. The company was founded by Arthur Pfeiffer in 1890 and is headquartered in Asslar, Germany.

Pfeiffer Vacuum (Schweiz) AG engages in the sale, distribution, and maintenance of technical equipment and installations. The company was founded on June 25, 1997 and is headquartered in Zurich, Switzerland.

Schunk GmbH provides technology products and systems. The firm provides its products in the areas of carbon technology & ceramics, environmental simulation & climate technology, sintered metals and ultrasonic welding. The company was founded by Ludwig Schunk on October 27, 1913 and is headquartered in Heuchelheim, Germany.

B.R.A.I.N. Capital GmbH is a finance company based in Zwingenberg, Germany. B.R.A.I.N. Capital GmbH offers a unique financing option for students through a reverse generational contract, which allows them to finance their tuition fees for both bachelor's and master's degrees. The German company was founded in 2015, and Manfred Bender has been the CEO of the company since 2019.

Stadtwerke Gießen AG is a company based in Giessen, DE. The company provides various services such as electricity, gas, water, and district heating to the citizens of Giessen and the surrounding areas. Additionally, Stadtwerke Gießen AG operates several subsidiaries, including a German waste management company and a public transportation company, and is ultimately controlled by the University City of Gießen.