Gpa N.62696 For The Assignment Of The Programmed Maintenance Service, With A Call On Call, Specialist And Evolutionary On Machine Tools, At The Maintenance Systems Of The Dt And The Dbrsi Of Trenitalia S.P.A., Divided Into N.6 Lots: Lot 1 - Tuscany And Umbria; Lot 2 - Emilia Romagna; Lot 3 - Lombardy; Lot 4 - Campania And Puglia; Lot 5- Veneto; Lot 6 - Friuli Venezia Giulia.