57/52/1/25/024 - Weed Control Of The Railway Tracks, Platforms, Service Paths And Various Surfaces Within Infrabel'S Appurtenances. Lot 1: Maintenance Region 11 Brussels. Lot 2: Hsl Line 1 Between Halle And Sncf Border. Lot 3: Hsl Line 2 Between Ans And Leuven. Framework Agreement