operation of a cleaning company, all interior and exterior maintenance work on buildings and facilities, facility management services (maintenance service management) aimed at maintaining the value of buildings, installations and infrastructure, technical building maintenance, disinfection, maintenance of external installations such as parking lots, security services, catering (catering service), moving, rental of machines, equipment and installations to companies, laundry maintenance service, mandates and real estate (without ownership), maintenance of technical installations, building automation and maintenance of green spaces and plants (see statutes for full purpose).