Germany/Austria/Switzerland
Architects and Engineers
Henn Architekten, Kohlbecker, Spiekermann, BMT, Puck & Sachau, Tillmann+Herog ICC, Nattler, Jan Klinker Architekten, WP Waibl, Koppenhöfer & Partner, PLANungs AG, Mäckler, Gröpper, Gölkel, Hinck, J.S.K.
Prefabricated housing manufacturers
Gussek Haus, Hebel Haus, Huf Haus, Weberhaus, Zapf, Hartl Haus, FingerHaus, Elk, Platz Haus, Zenker, Regnauer, Vario Bau
Home builders
GeWo, LuWoGe, DeGeWo, GAG, Wobau
Government offices and institutions
Stadtwerke Bochum, Stadt Hamburg, Donauspital Wien, Landeshauptstadt Hannover, Uniklinik Rostock, Rheinische Kliniken, Stadt Osnabrück, Stadt Herford, Stadtbauamt Zirndorf, Kölner Verkehrsbetriebe
Automotive industry
BMW, DaimlerChrysler, Evo Bus, Porsche, Karmann
Airports
Hamburg, Düsseldorf, Stuttgart, Frankfurt, Nürnberg
Industry and trade
BASF, Bayer, Beiersdorf, Bosch-Siemens, Merck, KaVo, Ferrero, Novartis, Degussa, MAN Roland, Rewe, toom Markt, Schering, Laroche, Wacker, Linde, Miele, Edeka, Röhm, Bilfinger+Berger, Bartram, Vaillant, Henkel, Babcock, Technip Germany, Siemens
Services
debis, Deutsche Bahn, DeTe Immobilien, TKK Hamburg, HUK Coburg, Gerling, WestLB, DG-Hyp, EAM, EnBW, RWE, HEAG, Infracor, Barmenia, LWK NRW, LVM Versicherungen, InfraServ & Höchst KG, Baugesellschaft Berlin, SCD
International
Bechtel, (United States)
Albert Kahn (United States)
Bechtel (England)
Foster Wheeler Energy (England)
Gec Alsthom (France)
Technip France (France)
Heembeton (Netherlands)
Ringvaart (Netherlands)
Fluor Daniel (Netherlands)
Abacus (Netherlands)
Croonen (Netherlands)
Kemira Engineering (Finland)
Arktos (Norway)
PML (Ireland)
PGESCO (Egypt)
DaimlerChrysler (South Africa)
Technip Italy (Italy)
Bayer Technology Services Shanghai (China)