Annual Maintenance Contract Of Existing Sewer Line Network In The Areas Of Kobbarithota, Rly New Colony, Allipuram, Ganapuram, & Lalitha Nagar Of Ward Nos. 26(P), 27(P), 32, 33(P) 34, 41, 42 & 43P Under Ae(Ws&S)-13 Section In Gvmc, Visakhapatnam For The Year 2025-2026.