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