http://www.denys.be
AIG (Alumni Association of Engineering Graduates of Ghent University)
AQUILES
AWA (African Water Association)
BECETEL (Belgian Research Centre for Pipes and Fittings)
BGGG (Belgian Society of Soil Mechanics and Geotechnical Engineering)
BIG (Pipeline Industry Guild)
BIL (Belgian Institute for Welding Technology)
B-IWA (Belgian Committee of International Water Association)
BOLEGBO-VOK (Association of drilling, cable-laying and pipe-laying companies)
BVOTS (Belgian Association for Underground Technologies and Urban Planning)
DVGW-Bescheinigung (German Association for Gas pipelines and Water mains)
FABA (Federation of General Construction Contractors)
FLEV (Liège Federation of Highway Contractors)
Gasunie Accredited Supplier
IPLOCA (International Pipe Line & Offshore Contractors Association)
Royal Federation of the Master Stonemasons of Belgium
KVIV (Royal Flemish Engineering Association)
National Assocation of Road Builders
Vlerick Alumni
Association of Roadwork Contractors in the Region of Ghent
FEB (Federation of Belgian Entrepreneurs)
VCB (Flemisch Construction Confederation)
VLARIO (vzw WEL/VLARIO)
VOKA (Flemish Economic Association)
Restoration Industry Group
WTCB (Scientific Technical Centre for the Construction Industry)