Analyst Conference Q3/2009 October 27, 2009

Agenda Q3/2009 Situation Consolidated Financial Results PVC Outlook Q4/2009 Map Ta Phut Issue Q & A

I. Q3/2009 Situation

Q3/2009 Market Highlights PVC demand increased as economics recovery. More output of acetylene based PVC after crude prices increased. Rise in VCM prices as a result of cost push from ethylene and tight supply. Higher EDC prices compare with Q2, because suppliers cut their chlor-alkali production due to squeeze margin of caustic business. Peak ethylene prices in Q3 due to shutdown from NPC-Iran.

Vinyls Market and Price Movement US$/MT Ethylene PVC VCM EDC Q1 ’07 Q2 Q3 Q4 Q1 ’08 Q2 Q3 Q4 Q1 ’09 Q2 Q3 PVC Price 844 921 994 983 1,025 1,159 1,237 735 639 719 883 PVC-EDC 417 517 563 561 610 730 755 528 472 407 423 Gap (US$/MT) PVC-EL (463) (241) (182) (216) (212) (227) (143) 193 11 (23) (147) Gap (US$/MT)

PVC Resin Sales Volume YTD up 6 % Q-o-Q as the demand started to increase but down 6% Y-o-Y from shutdown of PVC production in Samutprakarn plant since Sep’08. MT 589 - 13 % Y-o-Y 515 26% 28% 37% 37% MT 37% 35% 206 197 186 177 174 + 6 % Q-o-Q 25% 164 26% 156 27% 28% 28% 27% - 6 % Y-o-Y 28% 34% 36% 40% 37% 37% 37% 44% 41% 38% 33% 35% 36% 35% 29% Regional Sales = Vietnam & Indonesia

PVC Resin Sales Volume 746 745 647 617 25% 26% 25% 519 24% 28% 37% 29% 38% 30% 37% 46% 46% 37% 36% 35%

II. Consolidated Financial Results (Preliminary & Unreviewed)

Consolidated Revenue from Sales YTD Million Baht increased 21 % Q-o-Q from higher prices and volume but decreased 24% Y-o-Y. - 31 % Y-o-Y Million Baht + 21 % Q-o-Q - 24 % Y-o-Y

Consolidated Revenue from Sales Million Baht

Consolidated EBITDA YTD Up 15% Q-o-Q from increase in sales volume but down 45% Y-o-Y from lower price gap. Million Baht - 35 % Y-o-Y Million Baht + 15 % Q-o-Q - 45 % Y-o-Y

Consolidated EBITDA Million Baht

Consolidated Net Profit YTD Million Baht Up 23% Q-o-Q due to increase in sales volume. - 37 % Y-o-Y Million Baht + 23 % Q-o-Q - 49 % Y-o-Y

Consolidated Net Profit Million Baht

III. Outlook Q4/2009

Q4/2009 Outlook Subdued PVC demand is expected because of seasonality. VCM prices decrease in response to weaker PVC price trend. As caustic soda demand and prices improved, EDC prices probably reverse to a downward trend. Ethylene prices will be decline, but stay in high level due to high crude oil prices.

โครงการขยายกำลังการผลิตผงพลาสติกโพลีไวนิลคลอไรด์ สายการผลิตที่ 8 และ 9 Map Ta Phut Issue โครงการขยายกำลังการผลิตผงพลาสติกโพลีไวนิลคลอไรด์ สายการผลิตที่ 8 และ 9 โครงการขยายกำลังการผลิตไวนิลคลอไรด์โมโนเมอร์ของโรงงานที่ 1 และ 2

Q & A

Next Analyst Conference will be held on January 26, 2010 Thank you