A. PUBLIC SECTOR
- Ministry for the Environment, Physical Planning and Public Works
- Ministry of Rural Development and Food
- Ministry of National Economy
- Δ.Ε.Η. Α.Ε.
- Athens Water Supply and Sewerage Company (EYDAP)
- DEYA of Volos
- Attiko Metro
- Prefecture Fund of Attica
- Prefecture Fund of Sterea Ellada
- Prefecture Fund of Southern Aegean
- Prefecture Fund of Magnisia
- Municipality of Mandra
- Municipality οf Apollonas, Prefecture οf Arcadia
- Municipality of Vrilisia
- Municipality of Halandri
- Municipality οf Glyfada
- Municipality οf Fili
- Municipality οf Argyroypoli
Β. PRIVATE SECTOR
- J&P AVAX
- TITAN Group
- S&B Industrial Minerals s.a.
- Streamlined LTD
