ThyssenKrupp AG is an international group of companies comprising largely independent industrial and technology businesses. It operates through the following segments: Components Technology, Elevator Technology, Industrial Solutions, Marine Systems, Materials Services, Steel Europe, and Corporate. The Components Technology segment offers components for the automotive, construction, and engineering sectors, as well as for the wind turbines. The Elevator Technology segment constructs and modernizes elevators, escalators, moving walks, stair and platform lifts, and passenger boarding bridges; and installation. The Industrial Solutions segment is an international supplier in special and large-scale plant construction, as well as naval shipbuilding. The Materials Services segment distributes materials and provides complex technical services for the production and manufacturing sectors. The Steel Europe segment involves in the flat carbon steel activities such as materials solutions and finished parts. The Corporate segment refers to the head office; and the performance of processes in accounting, information technology, real estate and human resources, as well as special units for the management of the real estate operations. The Marine System segment is active in naval shipbuilding. The company was founded on March 17, 1999 and is headquartered in Essen, Germany.