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- ALCON Consultant Engineers LTD
- CONSEED IKE
- OXFAM Greece
- UNHCR
- Municipality of Dodoni
- Technical Chamber of Greece (Department of Epirus)
- ΚGS Development S.A.
- Geoanalysis S.A.
- Akmi Consultant Engineers
- Hellenic statistical authority
- Schediasmos S.A.
- Mihaniki Meletitiki Company
- POLYLINE S.A.
- Centre for Research & Technology Hellas (CERTH)
- Institute Vocational Training of Ioannina
- KWADRAD+
- 1LIFE IKE
- AXON envirogroup LTD
- Ergon Michaniki Company
- ELLAKTOR S.A.
- Panagiotis Pappas & Co LP
- Epirus Football Clubs Association (EPFCA)
- ‘Market 2u’ P.C.
- ‘Oneiro Villas’ P.C.
- ‘Elite Residencies’ P.C.
- ‘1 Life’ P.C.
- ‘Karabelas Bros’ Commercial & Industrial S.A.
- Central Markets & Fishery Organization
- Sylvestris G.P.
- ‘Oktakosia’ Commercial & Industrial S.A.
- ‘Saint George’ Single-Member P.C.
- TERNA ENERGY – GEK TERNA GROUP
- Hellenic Manpower Employment Organization (OAED)
- Regional Association of Municipalities of Ionian Islands
- ‘Agia Eirini’ General Hospital of Corfu
- ‘Air Energy’ S.A.