|
 | | HOCHTIEF Infrastructure GmbH/Building | Erfurt, Hannover, Kassel, Berlin, Essen |
 | | HOCHTIEF Infrastructure GmbH/Building | Berlin |
 | | HOCHTIEF Infrastructure GmbH/Building | Erfurt, Kassel, Berlin, Essen |
 | | Ed. Züblin AG | Berlin, Hamburg, Dresden, Rostock, Bremen |
 | | Drees & Sommer SE | Frankfurt am Main, München, Hamburg, Leipzig, Köln, Berlin, Stuttgart |
 | | STRABAG AG | Berlin |
 | | Drees & Sommer SE | Hamburg, Hannover, Münster, Bremen, Dresden, Leipzig, Düsseldorf, Köln, München, Frankfurt, Berlin |
 | | Drees & Sommer SE | Stuttgart, Frankfurt am Main, München, Köln, Berlin, Freiburg |
 | | Drees & Sommer SE | Hamburg, Hannover, Münster, Bremen, Dresden, Leipzig, Düsseldorf, Köln, München, Frankfurt, Berlin |
 | | STRABAG Rail Fahrleitungen GmbH | Berlin, Groß Kreutz, Freital |
 | | B.B.S. Bauer's Buildings Services GmbH | Berlin |
 | | B.B.S. Bauer's Buildings Services GmbH | Berlin |
 | | B.B.S. Bauer's Buildings Services GmbH | Berlin |
 | | B.B.S. Bauer's Buildings Services GmbH | Berlin |
 | | B.B.S. Bauer's Buildings Services GmbH | Berlin |