references

Federal Criminal Police Office Meckenheim
City of Koblenz
Airport Cologne Bonn GmbH
Federal Agency for Real Estate
Federal Ministry of Transport and Digital Infrastructure
University of Bonn
Society for International Cooperation (GIZ)
University of Bonn-Rhein-Sieg
alliance, insurance
AOK, Hamburg
AEG Research Center in Frankfurt
Office for Building Management, Düsseldorf
Alleco, Gestrung
Nursing center in Hochheim
District association Palatinate, Kaiserslautern
Bfarm, Bonn
Bauwert GmbH, Cologne
Federal agency for work
Federal Miners’ Association, Bergheim
EVIM Ev. Inner Mission Association, Nassau
Diakonie Michaelshoven
City of Hürth Building Department
City of Cologne building department
City of Kerpen Building Department
City of Brühl Building Department
City of Wesseling Building Department
Lotte Lemke House, Bad Kreuznach
Metro Group, Boeblingen
Phillip Morris Research, Cologne
Renault Nissan Deutschland AG
Rheinische Kliniken Bonn
Rhenish clinker Düren
University of Cologne
Rheinsieg Transport Company Ltd
Solarworld AG, Bonn
Bonn State Forestry Office
Association for the physically handicapped e. V. Bruehl
Customs Technical Inspection Office, Cologne
City of Ennepetal
Municipality of Wachtberg
town of Schleiden
Verbandsgemeinde Stadt Konz
Union municipality, Bad Bergzabern
Association of Municipalities of the City of Bitburg
City of Hennef
Association of Municipalities of the City of Altenkirchen
Rhein-Hunsrück district administration
District administration Neuwied
District administration, Trier
Saarburg town of Voelklingen
City administration of Wittlich
City administration, Idar-Oberstein
Municipality of Marnheim
Caritas Association Erftkreis eV Hürth
Saarland Ministry of Finance, Saarbrücken
Regional train, Mettmann
State Central Bank, Dusseldorf
Viterra Baupartner AG Cologne
Serafin retirement home, Würselen
Overland plant Fulda
Research Gemstones, Idar Oberstein
Kirchheimbolanden Hospital
Retirement Home Wetterstein, Brühl
Kaufhof AG Aachen
Hochtief AG, Rhineland
Fantasyland, Bruehl
German Red Cross
Victoria Insurance Dusseldorf
Cologne Dusseldorfer AG
Konica Minolta
Lebenshilfe Kreisvereinigung, Prüm