|
 | | STRABAG Rail GmbH | Berlin |
 | | KSP ENGEL GmbH | Berlin |
 | | Drees & Sommer SE | Stuttgart,Frankfurt am Main, München, Hamburg, Leipzig, Köln, Berlin |
 | | Rail Power Systems GmbH | Berlin, Offenbach am Main |
 | | GOLDBECK Nordost GmbH | Rostock, Leipzig, Magdeburg, Berlin-Schönefeld |
 | | Drees & Sommer SE | Berlin |
 | | Drees & Sommer SE | Berlin |
 | | Drees & Sommer SE | Berlin |
 | | ZWP Ingenieur-AG | Wiesbaden, Dresden, Hamburg, München, Köln, Bochum, Stuttgart, Berlin, Hachenburg, Erding |
 | | STRABAG AG | Berlin |
 | | apoprojekt GmbH | Berlin |
 | | SOCOTEC Building Solutions GmbH | Berlin, Dresden, Frankfurt am Main, Mülheim an der Ruhr, München |
 | | David Chipperfield Architects | Berlin |
 | | W² Bau GmbH | Waghäusel, Karlsruhe, Berlin, Hamburg, München, Leipzig, Köln, Dresden, Hannover, Bremen |
 | | Ed. Züblin AG | Berlin |