Harald Adolf Supper

Ed. Züblin AG engages in the provision of building construction and civil engineering services. Its services include turnkey construction, structural maintenance, tunnelling, ground engineering, structural steelwork, timber construction, environmental technology, bridge construction, chimney and refractory engineering, construction logistics, and modular construction . The company was founded by Eduard Züblin in 1898 and is headquartered in Stuttgart, Germany.

European International Contractors EV operates as a contractors association. The company was founded in 1970 and is headquartered in Berlin, Germany.

DYWIDAG International GmbH provides civil engineering and construction services. The company was founded in 2000 and is headquartered in Cologne, Germany.

Part of STRABAG SE, STRABAG International GmbH is a German construction company that specializes in civil engineering, prime building construction, and transportation infrastructure. The company is based in Cologne, Germany. The CEOs of the company are Jörg Wellmeyer, Jürgen Raschendorfer.

Part of VDE Verband der Elektrotechnik Elektronik Informationstechnik, VDI/VDE Innovation + Technik GmbH is a leading service provider for project management, analysis, and organization of innovative solutions. The company is based in Berlin, Germany. The German company offers solutions for every step in the innovation process and are involved in various technology programs, including the Smart Data Economy program, which promotes innovative data products and services. The company was founded in 1978, and the CEOs are Peter Dortans and Werner Wilke.