|
 | | TKS GmbH | Berlin |
 | | Drees & Sommer SE | Stuttgart, Berlin |
 | | Thiel Baugesellschaft mbH | Berlin |
 | | BIT Büro für Integrale Tragwerksplanung GmbH | Berlin |
 | | HOCHTIEF Infrastructure GmbH/Building | Berlin |
 | | STRABAG Property and Facility Services GmbH | Berlin |
 | | Drees & Sommer SE | Berlin |
 | | Rail Power Systems GmbH | Offenbach am Main, Berlin, Leipzig |
 | | STRABAG Rail GmbH | Berlin |
 | | Drees & Sommer SE | Hamburg, Dortmund, Köln, Düsseldorf, Frankfurt am Main, Stuttgart, Berlin |
 | | Drees & Sommer SE | Berlin |
 | | STRABAG AG | Berlin |
 | | Ed. Züblin AG | Berlin |
 | | Ed. Züblin AG | Berlin, Hamburg, Rostock, Magdeburg, Halle |
 | | Drees & Sommer SE | Stuttgart,Frankfurt am Main, München, Hamburg, Leipzig, Köln, Berlin |