• Apollon S.A.
• ATEM Group
• Central Newspapers' Agency S.A .
• Department of Agriculture Division for land improvement and farm structures - Directorate of Technical Studies and Construction
• Department of Construction Works Inspection (DEKE) / (Region of central Macedonia)
• Department of Land Reclamation of the Department of Public Works of central Macedonia
• Dimosthenis S.A.
• DM - Fur tanning, dyeing, production and processing company
• Dovletoglou
• Dying Workshop of Thessaloniki S.A.
• Elfiko S.A. - Textile Industry
• Erton Group - P. Kostopoulos
• Fisheries Development Company (ETANAL) S.A.
• J / V Daring Steel Construction S.A. - AR Group S.A.
• J / V Loukadopoulos Minas - Project Dynamic S.A.
• J / V Manidakis - Agiasmatis
• J / V Mesochoriti Bros S.A. Agorogiannis M. Christias G.Peter Gross GmbH & CoKG
• J / V Themeliodomi SA - Aktor - Athena A.E.T.V - Passavant Roediger Products GmbH - Giovanni Putignano & figli Srl
• J / V WWTP - Katerini
• Kalaitzis Dionisios
• Karamichailidis - Stefanoudis
• Kibaslis
• Liolios Konstantinos
• M. Pilidis & Co
• Mak - Max
• Markoulis George
• Mete S.A.
• Mezap
• Moraitidis & Sons
"• Municipal Enterprise for Water Supply and Sewerage of Kozani (D.E.Y.A.) "
"• Municipal Enterprise for Water Supply and Sewerage of Migdonia (D.E.Y.A.) "
• N. Zarifopoulos
• Nitrogenous Fertilizer Manufacturing A.E.V.A.L.
• Paint Workshop Foivos Giannousis & Kliafa Sons S.A.
• Pelasgis
• Poluguros' Hospital Chalkidiki
• Prefecture of Thessaloniki: Division for Water Resources and Land Reclamation -Technical Studies and Projects
• Rail Projects S.A.
• Regional Directorate of Primary and Secondary Education of North Aegean
• Sapouna S.A.
• School Buildings Organization (O.S.K.) S.A.
• Technical Company "Christakis"
• Technical Department of Chania's prefecture (D.T.Y.N.A.)
• Technical Department of Chios' prefecture (D.T.Y.N.A.)
• Technical Department of Kozani's prefecture (D.T.Y.N.A.)
• Technical Department of Pieria's prefecture (D.T.Y.N.A.)
• Technical Department of Thessaloniki's prefecture (D.T.Y.N.A.)
• Union of Construction Companies Ltd
• V. Stamatiou
• V.P.I. S.A.
• Vermion S.A.
• Zak S.A.
HELLENIC DEFENCE VEHICLE
SYSTEMS S.A.
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