Biege PA 1.7 BTO c/o Ed. Züblin AG from Stuttgart secured the contract to provide railway technology/armouring (BTO) in the 15 km section including the 2.3km Filder tunnel and NBS station, Stuttgart 21 project, Lot D. Contact DB Projekt Stuttgart-Ulm GmbH, Stuttgart, tel +49 6926521939, fax +49 6926521939, email einkauf-s21nbs@deutschebahn.com. Visit https://ted.europa.eu/en/notice/-/detail/280261-2024 . Ref.n. 20FEI45351. 20/24.