This Northern Railway tender notice is for a three-year comprehensive annual maintenance contract for G.G.Tronics make HASSDAC in the Delhi Division.The approximate cost of the work is ₹3,92,76,743.76, with a required bid security of ₹7,85,500.00.Interested parties can upload tenders on the IREPS website until 13.08.2026 at 15:00 hours.