Central Offices: Ierapetra, Crete, Greece, Tel.: +30 28420 80415-6, 89440, Fax: +30 28420 28135, email: ier@ngpsa.gr

Branch: Rizari, Edessa, Greece, Tel.: +30 23810 51227-8, Fax: +30 23810 51268, email: ede@ngpsa.gr

Branch: Isthmos, Korinthos, Greece, Tel.: +30 27410 74310-7, Fax: +30 27410 74318-9, email: info@ngpsa.gr