Herbert Schaaff

Part of Vallourec SA, Vallourec Deutschland GmbH is a German company that manufactures seamless steel tubes and pipes for the oil and gas industries. The company is based in Duesseldorf, Germany. The CEOs are Andreas Schubert, Herbert Schaaff, and Michael Kassing. The private company was founded in 2001 by Max Mannesmann and Reinhard Mannesmann.

T-Systems International GmbH engages in the development, implementation, operation, and marketing of client- and industry-specific solutions in the information processing and telecommunications sectors. These include security, data processing, information management, training, and consulting services. The company was founded on August 30, 2004 and is headquartered in Frankfurt, Germany.