Smart Industrieservice GmbH installs, services and repairs smoke and heat exhaust systems and natural ventilation for industrial and commercial buildings across North Rhine-Westphalia. The company is a member of the RAL-Gütegemeinschaft Rauch- und Wärmeabzugsanlagen e.V. and describes itself as a certified RWA specialist firm, subject to annual independent audit under the RAL quality assurance scheme. Its service area runs from Mönchengladbach and Aachen through Düsseldorf and Krefeld into the Ruhr.