Ref. App. 07/2026 Open Procedure, Pursuant To Articles. 71 And 141 Of Legislative Decree No. 36/2023, For The Conclusion Of A Framework Agreement With A Single Economic Operator Per Lot, Pursuant To Articles. 59 Paragraph 3 And 154 Of Legislative Decree 36/2023, Lasting 24 Months, Concerning The Assignment Of The Supply Of Chemical Reagents To Be Used In The Water Treatment Plants Managed By Abbanoa S.P.A,