Hellenic Cement Research Center (EKET) Ltd.
GeoTerra Ltd. Laboratory - Geomechanics and Quality Control Laboratory
GEOTECHNOLOGIKI SA(Thessaloniki)
ANTOSET (Thessalonika)
ADOLAB
(Σίνδος-Θεσσαλονίκη)
ATTIKI ODOS S.A.
Laboratory of Quality Control “Demetrios Lavdas”
GEOTER DIDASKALOU (Θεσσαλονίκη)
G. Grintzos and Co.,
Quality Control and Quality Assurance of Civil Works
EDAFOMICHANIKI S.A. (Athens)
CERECO SA (Chalkis)
Dr. MICHALIS ARVANITAKIS (Athens)
TRIPSANIS
GRIGORIS (Thessaloniki)
EPIGNOMON Ltd. (Athens)
Τ.Ε.D.Υ. Ltd. (Patra)
ENCO Ltd. (Athens)