Object: Electronic Auction - The Object Of The Bidding Is The Hiring Of A Specialized Company Or Consortium Of Companies To Carry Out Renovation, Recovery And Maintenance Services For Tunneling Machines 1 And 2 (Tbm Tunnel Boring Machine), Including Their Peripherals And Energy Supply Systems, Necessary For The Continuity Of The Works On The East Line Of The Fortaleza Metro Phase 1, Including The Execution Of The Prolonged Stoppage Procedure, Under The Conditions Established In This Notice And Its Annexes.