Vishnusurya Projects & Infra surged 16% after bagging a ₹2,217 crore SIPCOT order to build a 60 MLD seawater desalination plant at Mullakadu, Tuticorin. The project, in partnership with JWIL Infra and IDE Technologies, will be executed under the Hybrid Annuity Model, with 30 months for construction and 15 years for O&M.