•   RAG                                                                                                             Rohrleitungsbau

      SAG                                                                                                            Energietechnik

      Hertel AG                                                                                                   Technische Isolierungen

      Bruch Gmbh                                                                                             Metallhüttenwerkr

      Franzen Group                                                                                          Industriebau

      Ewald Dörken AG                                                                                      Chemie

      Wayss & Freytag                                                                                        Ingenieurbau

      Hamon Thermal Gmbh                                                                            Anlagenbau                                    

      Kommunales Elektrizitätswerk Mark AG                                               Energieversorgung                                                     

      Reinisch Westfälisches Elektrizitätswerk AG                                         Energieversorgung
 

             

                                                                                                                                                                                                                                                                                                                                            

                                                            

                                                                                                      

 

                                                                                                                                                                                                                                                                                                                               

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