Gypsum Structural emerges as L1 bidder for implementation of Ballygunge Park Road and Mullen Street Macro Drain Enhancement Project in Kolkata, West Bengal June 12, 2025 | Awarded, Industrial Wastewater, Key Segments, Project Updates, Wastewater Gypsum Structural India Private Limited has emerged as the lowest (L1) bidder for implementation of the Ballygunge Park… This content is restricted.