** Shares of Clean Science and Technology NSE:CLEAN rise 7.32% to 1,426.3 rupees
** Specialty chemicals manufacturer set for best day in nearly 5 months
** Co's Q4 PAT up 6% Y/Y, revenue increases 16%
** IDBI Capital points to "impressive" ramp-up in co's hindered amine light stabilizers (HALS) segment, used in water treatment and protecting polymers from UV radiation damage
** Prabhudas Lilladher says revenue expansion was driven primarily by volumes, HALS sales more than tripled in FY25 y/y
** CLEA aims to more than double HALS sales in FY26 with improved pricing
** In the HALS market, CLEA "has grabbed 50% market share in India, which is impressive in two years" - ICICI Securities
** With session's gains, stock up ~1% in the last 12 months, erasing decline