Establish The Conditions And Requirements For The Hiring Of The Accounts Audit Service, In Accordance With The Specifications Of Annex I Of This Pliego, For The Eusko Trenbideak-Ferrocarriles Vascos, S.A. And Euskotren Participaciones, S.A. (Hereinafter Euskotren And Euskotren Participations, Respectively), As Well As The Verification Service Of The Non -Financial Information State (Einf) (Only For Euskotren), And All Of Them For Exercises 2025, 2026 And 2027.