Invitation to tender by negotiated procedure, deadline 06/11/2020, for the HVAC (Heating-Ventilation-Air Conditioning), plumbing and smoke extraction works of the four underground stations on the metro Line 11 extension to Rosny-Bois-Perrier in Paris. The duration of the contract will be 44 months. For tender documents https://ratp.bravosolution.com/web/login.html, where tenders must be sent. Contact RATP, attn Faty Komara, Paris, email faty.komara@ratp.fr. For further tender information please click here. Ref.n. DHA_2018MOP12602. 44/20.