** India's Galaxy Surfactants GALX.NS jumps 7% to three-week high of 2,397 rupees per share
** GALX on course for biggest single day percentage gains in since September 16
** Chemicals maker enters strategic collaboration with one of its global customers for engineering, procurement and construction (EPC) services
** Collaboration comprises of commissioning performance surfactants and specialty ingredients plant at an overseas location
** Co says discussions underway to enhance the collaboration post commissioning of plant
** Analysts average rating on stock "buy"; median PT 2,933 rupees, as per LSEG data
** Stock down 5% so far in 2025 amid broad-based weakness in the market
(Reporting by Vivek Kumar M)
((VivekKumar.M@thomsonreuters.com;))