Open Procedure, Pursuant To Art. 71 Of Legislative Decree 36/2023 For The Assignment Of The Ordinary And Extra-Can Maintenance Service Of The Electrical Cabins, Generating Sets And Ups Of The Asp Immes Pat Institutes With 24/7 Availability Service In Milan And Merate For A Duration Of 48 Months Beyond 12-Month Extension Option, Through The Sintel Telematic Platform.