|
 | | Büro Jahnke Inh. Yvonne Jahnke | Berlin |
 | | SPITZKE SE | Großbeeren, Berlin |
 | | TORKRET GmbH | Berlin |
 | | Rhomberg Sersa Rail Group | Dresden, Halle (Saale), Berlin, Spremberg |
 | | Rhomberg Sersa Rail Group | Dresden, Halle (Saale), Berlin, Spremberg |
 | | HOCHTIEF PPP Solutions GmbH | Berlin |
 | | Richard Ditting GmbH & Co. KG | Hamburg, Berlin |
 | | Zeppelin Rental GmbH | Berlin |
 | | Rhomberg Sersa Rail Group | Dresden, Berlin |
 | | CDM Smith SE | Berlin |
 | | Saint-Gobain Weber GmbH | Berlin, Brandenburg, Mecklenburg-Vorpommern |
 | | CDM Smith SE | Berlin |
 | | Rhomberg Sersa Rail Group | Dresden, Halle (Saale), Berlin, Spremberg |
 | | GOLDBECK Nordost GmbH | Schönefeld (bei Berlin), Berlin |
 | | Patrick Reichelt & Team Garten- & Landschaftsbau | Trebbin |