Chambers of commerce:

• Chamber of commerce of the land Schleswig-Holstein, Kiel
• Chamber of commerce and Industry, Regensburg
• Chamber of commerce and Industry Pfalz, Ludwigshafen
• Chamber of commerce Heilbronn-Franken, Heilbronn
• Chamber of commerce Hochrhein Bodensee, Schopfheim
• Chamber of commerce Ostwürttemberg, Heidenheim
• Chamber of commerce and Industry Region Stuttgart, Stuttgart
• Chamber of commerce and Industry Villingen-Schwenningen,Villingen-Schwenningen
• Chamber of commerce and Industry, Aschaffenburg
• Chamber of commerce and Industry Bodensee-Oberschwaben, Weingarten
• Chamber of commerce and Industry, Passau
• Chamber of commerce and Industry, Bayreuth
• Chamber of commerce and Industry Mainfranken, Würzburg
• Chamber of commerce and Industry Nürnberg für Mittelfranken, Nürnberg
• Chamber of commerce and Industry, Reutlingen
• Chamber of commerce - Kompetenz Zentrum Südost Europa, Ulm
• Chamber of commerce and Industry, Coburg
• Chamber of commerce and Industry, Cottbus
• Chamber of commerce and industry, Frankfurt/Oder
• Chamber of commerce and industry, Potsdam
• Chamber of commerce and industry, Bremerhaven
• Chamber of commerce and industry, Bremen
• Chamber of commerce and industry, Darmstadt
• Chamber of commerce and industry, Frankfurt am Main
• Chamber of commerce and industry, Fulda
• Chamber of commerce and industry, Gießen - Friedberg
• Chamber of commerce and industry, Kassel
• Chamber of commerce and industry, Limburg
• Chamber of commerce and industry, Offenbach
• Chamber of commerce and industry, Rostock
• Chamber of commerce and industry, Braunschweig
• Chamber of commerce and industry, Osnabrück-Emsland
• Chamber of commerce and industry, Emden
• Chamber of commerce and industry, Oldenburg
• Chamber of commerce and industry, Stade
• Chamber of commerce and industry, Hannover
• Chamber of commerce and industry, Arnsberg
• Chamber of commerce and industry, Bielefeld
• Chamber of commerce and industry, Bochum
• Chamber of commerce and industry, Duisburg
• Chamber of commerce and industry, Lüneburg-Wolfsburg
• Chamber of commerce and industry, Bonn/Rhein-Sieg
• Chamber of commerce and industry, Detmold
• Chamber of commerce and industry, Dusseldorf
• Chamber of commerce and industry, Köln
• Chamber of commerce and industry, Mönchengladbach
• Chamber of commerce and industry, Leipzig
• Chamber of commerce and industry, Dresda
• Chamber of commerce and industry, Erfurt
• Chamber of commerce and industry, Flensburg
• Chamber of commerce and industry, Hagen
• Chamber of commerce and industry, Gera
• Chamber of commerce and industry, Koblenz
• Chamber of commerce and industry, Magdeburg
• Chamber of commerce and industry, Saarbrucken
• Chamber of commerce and industry, Suhl
• Chamber of commerce and industry, Mainz

Business Centers:

• Euro Info Center Augsburg
• Euro Info Center Wiesbaden
• Euro Info Centre ZENIT GmbH, Mühlheim a.d. Ruhr

Construction associations:

• Bauindustrie Nordbaden, Mannheim
• Bauindustrieverband Hessen-Thüringen e.V., Wiesbaden
• Bauindustrieverband Mecklenburg Vorpommern e.V., Schwerin
• Bauindustrie Bayern, München
• Bundesvereinigung Mittelständischr Bauunternehmen e.V.,
• Bayerischer Industrieverband Steine U. Erden e.V., Bonn
• Fachverband Beton Und Fertigteilwerke Baden-Württemberg e.V., München
• UVMB (Unternehmerverband Mineralische Baustoffe), Ostfildern
• Goldbeck GmbH, Bielefeld
• GP Günter Papenburg AG, Schwarmstedt
• F. KIRCHHOFF AG ,Leinfelden-Echterdingen
• UVMB (Unternehmerverband Mineralische Baustoffe), Leipzig