Window systems
- AD Megatec Komen (Belgium)
- Aluminios Cortizo Padrón (A Coruña) (Spain)
- Aluplast Karlsruhe (Germany)
- Aug. Winkhaus Telgte (Germany)
- CORTIZO Padrón (A Coruña) (Spain)
- Deceuninck Hooglede-Gits (Belgium)
- Forster Duffel (Belgium)
- GEZE Benelux Eindhoven (Netherlands)
- GRETSCH-UNITAS Belgium Brasschaat (Belgium)
- KÖMMERLING Strombeek-Bever (Belgium)
- KeJe Dronten (Netherlands)
- LoCra Kuringen (Belgium)
- MACO Beschläge Zelhem (Netherlands)
- Reynaers Aluminium Duffel (Belgium)
- SAPA Landen (Belgium)