Open Procedure Pursuant To Art. 71 Of Legislative Decree 36/2023 And Subsequent Amendments, For The Conclusion Of A Framework Agreement With A Single Economic Operator For Each Individual Lot, For Ordinary Maintenance Interventions On Autoclave Systems, Lifting Pumps, Underground Water Networks And Independent Heating Systems, As Well As For The On-Call Service Outside Normal Working Hours And Emergency Response, To Be Carried Out In Aler-Owned Buildings Located In Milan And Its Province And Managed In 6 Lots: N. 2 For The Uog Of Milan And N. 4 Lots For The Uog Of The Province. Financing: Budget Aler And Third Party Municipalities.