IRPC Annual Report 2023

Production Capacity and Volume Product (1) Production Capacity Volume (2) Utilization Rate 2021 2022 2023 2021 2022 (4) 2023 2021 2022 2023 Petroleum Oil Refinery (KBD) 215 215 215 192 175 192 89% 81% 89% Lube Base Plant 1,282 1,282 1,282 1,151 988 1,111 90% 77% 87% Lube Base Oil 320 320 320 333 281 323 104% 88% 101% Asphalt 600 600 600 655 551 621 109% 92% 103% Petrochemicals Polyolefins 915 915 915 863 735 693 94% 80% 76% - HDPE 140 140 140 119 98 92 85% 70% 66% - PP 775 775 775 729 624 590 94% 81% 76% Polystyrenics 433 433 433 408 321 276 94% 74 % 64% - ABS 119 119 119 89 68 51 75% 58% 43% - SAN 105 105 105 102 68 51 97% 65% 49% - PS 125 125 125 148 126 130 118% 101% 104% - EPS 48 48 48 42 35 24 88% 73% 49% Olefins (3) 696 696 696 664 647 486 95% 93% 70% - Ethylene 433 433 433 347 345 287 80% 80% 66% - Propylene 732 732 732 701 595 562 96% 81% 77% - Butadiene 56 56 56 52 52 36 93% 92% 65% Aromatics 501 501 501 514 460 369 103% 92% 74% - Benzene 114 114 114 113 79 87 99% 69% 76% - Toluene 132 132 132 141 123 104 107% 93% 79% - Mixed Xylene 121 121 121 146 121 90 120% 100% 75% Styrenics 260 260 260 263 244 239 101% 94% 92% Notes: (1) Total production capacity and volume of products consist of main products and other products. (2) Volume includes products used as feedstock in the plants. (3) Olefins production capacity at 696 KTA does not include olefins from DDC and RDCC plants. (4) In 2022, approximately 37 days of turnaround--scheduled large-scale maintenance activity. (Unit: KTA) 67 Structure and Business Operations of IRPC 56-1 ONE REPORT 2023

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