Operation of a service company in the field of electrical engineering, including installations, maintenance, repairs, planning, consulting, conception, documentation, quality control, and servicing for the application areas of electrical, sanitary, and heating systems, as well as trade and assembly of components in the field of building technology. Provides business management and administrative consulting and support services, particularly in the areas of accounting, project management, and organization. May establish branches and subsidiaries, both domestically and abroad, and invest in other companies, both domestically and abroad. May also acquire, encumber, dispose of, and manage real property, both domestically and abroad, as well as provide financing for its own or third-party accounts and issue securities for the liabilities of affiliated companies.