Investor Update April 2022

Gas Business : Gas Separation Plant (GSP) QoQ: GSP performance improved from higher average selling prices despite lower sales volume 2021 vs 2020 : Outperformed GSP performance due to higher selling prices & volume as well as lower feed cost GSP Sales Vol. & U-Rate GSP Feed Cost vs Petchem. Price Unit: $/Ton ptt 1,592 U-Rate 88.5% 84.6% 87.8% 90.0% 85.0% ૨૦૨ 1,533 1,540 LDPE 14% 1,398 1,239 1,285 LLDPE ▲ 8% 1,146 1,191 1,185 1,252 HDPE 10% Unit: kTon 4% 1,185 979 1,000 955 1,138 1,145 866 983 6,908 847 822 919 Propane* A 27% 3% QoQ 6% YoY 6,639 37 853 43 839 760 884 Pentane (1%) 754 648 593 954 Propane (14%) 500 528 446 464 425 430 423 412 420 458 363 328 LPG✶✶ ▲ 2% 418 Feed Cost*** ▲ 2% 331 307 318 281 281 297 295 300 1Q20 2Q20 3Q20 4Q20 1Q21 2Q21 3Q21 4Q21 2,181 Ethane (31%) 2,199 1,736 6 1,694 1,637 239 205 202 617 NGL (9%) 603 569 521 ૨૦૦ 513 144 161 144 2,947 3,113 LPG (45%) 761 815 767 * LPG price selling to Petro customers close to propane **LPG Domestic ***feed cost calculation per GSP production volume Key Highlights + Higher average GSP's selling prices following referenced global petrochemical prices Decreased sales volume due to petrochemical feed switching and lower gas supply Feed cost slightly increased 2021 vs 2020 + + Increased GSP's selling prices following global petrochemical prices Higher sales volume according to higher petrochemical demand and lower plants' shutdown compared to 2020 4Q20 3Q21 4Q21 2020 2021 + Lower feed gas cost 39

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