Organisatie van congressen en beurzen Grez-Doiceau (postcode: 1390)
| naam | straat | gemeente | kbo-nummer |
| BBS SERVICES | Avenue des Sapins,44 | Grez-Doiceau | 0456597212 |
| BEINV | Rue de Hamme-Mille,162 | Grez-Doiceau | 0805137315 |
| Eventplus | Rue Cyrille Bauwens,20 | Grez-Doiceau | 0788972165 |
| MARC'S PUPPET SHOW | Rue de Hamme-Mille,135 | Grez-Doiceau | 0440462152 |
| METAPHORE | Champ de Présenne,38 | Grez-Doiceau | 0454070856 |
| PALA Services | Avenue Albert Premier,14 | Grez-Doiceau | 0774527677 |
| PROTEXYS SERVICES COMPANY | Ry Mazarin,22 | Grez-Doiceau | 0874344439 |
| PROTEXYS SERVICES COMPANY | Ry Mazarin,22 | Grez-Doiceau | 0874344439 |
| T-WILE | Chaussée de Wavre,385 | Grez-Doiceau | 0673997966 |
| TWENTY9 | Chaussée de Wavre,385 | Grez-Doiceau | 0795343382 |