Friedrich Peter Joussen

TUI Deutschland GmbH is an operator of travel agencies in Germany. It offers travel, tours and hotel bookings, and car rental options. The company was founded on the 30th of September 1999 and is headquartered in Hannover, Germany, with branches within the country.

Riusa SA owns and operates a chain of hotels. It operates more than 110 hotels in 18 countries, 23 resorts in the American region, and beachfront locations in Europe. The company is headquartered in Palma de Mallorca, Spain.

1&1 Versatel GmbH engages in the provision of telecommunication services for small, medium-sized, and large enterprises, public institutions, communities, and municipal companies. It offers telephone, Internet, mobile, hosting, voice and site networking, personal consulting, email and web protection services. The firm also manages and develops a fiber network infrastructure. The company was founded in 1999 and is headquartered in Berlin, Germany.

Vodafone GmbH provides wireless telecommunications services. It also provides software on mobiles according to client specifications. The firm also provides terminal, service and system technology tests to the testing of new applications developed for specific customers. The company was founded in 1990 and is headquartered in Düsseldorf, Germany.