The Regional Organization for the Conservation of the Environment of the Red Sea and Gulf of Aden (PERSGA) 13 Avis Jeddah Muhawaq Governorate Municipality 261 Avis Ha'il Economic Cities and Special Zones Authority 26 Avis Riyadh Self-revenue fund in King Abdullah Medical City in the Holy Capital 6 Avis Mecca National Water Company 1601 Avis Dammam Lire la suite