|
 | | LANDA GmbH Landschaftsarchitektur | Berlin |
 | | Rhomberg Sersa Rail Group | Dresden, Halle (Saale), Berlin, Spremberg |
 | | GOLDBECK Nordost GmbH | Rostock, Leipzig, Magdeburg, Berlin-Schönefeld |
 | | Drees & Sommer SE | Stuttgart, München, Frankfurt, Köln, Berlin, Hamburg |
 | | Rhomberg Sersa Rail Group | Dresden, Halle (Saale), Berlin, Spremberg |
 | | Rhomberg Sersa Rail Group | Dresden, Halle (Saale), Berlin, Spremberg |
 | | Wendt Grundbau GmbH | Berlin |
 | | wpd infrastruktur GmbH | Potsdam, Berlin, Mainz, Osnabrück, Rostock, Schleswig |
 | | CDM Smith SE | Berlin |
 | | Rail Power Systems GmbH | Erfurt, Mannheim, Stuttgart, Ulm, Bochum, München, Ettlingen, Berlin, Dresden, Staßfurt, Offenbach |
 | | CDM Smith SE | Berlin |
 | | Zeppelin Rental GmbH | Berlin |
 | | Rhomberg Sersa Rail Group | Dresden, Halle (Saale), Berlin, Spremberg |
 | | Saint-Gobain Weber GmbH | Berlin, Brandenburg, Mecklenburg-Vorpommern |
 | | Rhomberg Sersa Rail Group | Dresden, Halle (Saale), Berlin, Spremberg |