| Serge Leon Celis |
THE OAK - MANAGEMENT AND CONSULTANCY, Gingelom |
| Serge Leon Celis |
CARRIERE D'OUPEYE, Sint-Truiden |
| Serge Leon Celis |
EURIMO, Sint-Truiden |
| Serge Leon Celis |
ORBIX SOLUTIONS, Farciennes |
| Serge Leon Celis |
CARBSTONE INNOVATION, Genk |
| Serge Leon Celis |
MULTIMODAL TRANSPORTS AND LOGISTICS, Gingelom |
| Serge Leon Celis |
M.T.L., Gingelom |
| Serge Leon Celis |
SYSTEM DEVELOPMENT AND ENGINEERING, Gingelom |
| Serge Leon Celis |
S.D.E., Gingelom |
| Serge Leon Celis |
CARRIERES DE TRIFFOYS, Farciennes |
| Serge Leon Celis |
CARRIERE LES ORNAIS, Sint-Truiden |
| Serge Leon Celis |
CARRIERE D'OUPEYE, Sint-Truiden |
| Serge Leon Celis |
INVEST COMPANY GENK, Genk |
| Serge Leon Celis |
ORBIX, Genk |
| Serge Leon Celis |
ORBIX REFRACTORIES, Genk |
| Serge Leon Celis |
D. G. M. - BELGIUM, Gingelom |
| Serge Leon Celis |
ORBIX Productions, Genk |