** Shares of polystyrene maker Supreme Petrochem Ltd
SPTL.NS up as much as 3.3% to 799 rupees, highest since Dec 5
** Co said on Thursday it increased effective expandable
polystyrene (EPS) production capacity at its Chennai plant
** Capacity increased from 24,000 tonnes per annum (TPA) to
33,000 TPA
** More than 10,000 shares change hands by 9:21 a.m. IST vs
30-day avg of ~24,400 shares
** Stock up 10.1% so far this year, up to last close
(Reporting by Biplob Kumar Das in Bengaluru)
((Biplobkumar.das@thomsonreuters.com))