The Thessaloniki Water Supply And Sewerage Company Sa (Eyath Sa) Announces An Electronic Competition With An Open Process Of Above Limits, On The Basis Of Awarding The Most Economically Advantageous Bidding On The Basis Of The Provision Of Supervision Services Through The A/S Control Center As Well As The Provision Of Maintenance And Repair Services Of 20 Budget Of One Million Five Hundred Thousand Euros (€ 1,500,000.00) Plus Vat And A Period Of Approximately 30 Months And No More Than 45 Months