Battered by rising EDC prices (with adverse effect on PVC/EDC delta) , margins on its flagship PVC resin business nosedived to 16.2% fin Q3 from 18.5% In the same period a year ago - 29.5% in Q2 - resulting in just 11.3% growth in PBT . Yet not imperceptible rise in margins in PVC pipes & fittings segment saved blushes for the overall OPMs expanded by some 80 bps. Restoration of price cuts undertaken in PVC pipes business...