Service and work performances in environmental protection, in particular in radiation and occupational safety, in steel and mechanical engineering, in the fields of nuclear and power plant technology and in research facilities, medical institutions as well as in the chemical and related industries, trade and distribution of accessories of all kinds and personnel leasing; may establish branches and subsidiaries, participate in other companies, acquire, encumber, sell and manage real estate, provide financing for its own or third-party account, and grant guarantees and sureties for subsidiaries and third parties.