Management and engineering of real estate and technical facilities, i.e. in particular maintenance, repair and janitorial services, management of buildings and their infrastructure, monitoring and operation of technical systems in and on buildings, maintenance and value enhancement of real estate and infrastructure, planning and realization of real estate, facilities and equipment, provision of services in the field of construction, as well as research, production and assembly of electronic monitoring and maintenance systems. The company may participate in other companies, acquire, encumber, sell and manage real estate, as well as acquire, use or sell technical and commercial rights or other assets.