IRPC One Report EN

No. Connected Party/ Relationship Transaction 2021 2020 2019 Nature and Condition 23. GC Styrenics Co., Ltd. (GCS) Relationship: PTT Global Chemical Plc holds 99.99% shares - Sale of goods 44 1 55 - IRPC sold aromatics products to GCS. 24. GC Glycol Co., Ltd. Relationship: PTT Global Chemical Plc holds 99.99% shares - Purchase of goods - 1 2 - IRPC purchased petrochemical products from Glycol. 25. GC Maintenance and Engineering Co., Ltd. (GCME) Relationship: PTT Global Chemical Plc holds 99.99% shares - Sales & admin expenses - Other payables 13 - 13 - 15 3 - IRPC paid engineering service fees to GCME. 26. PTT Asahi Chemical Co., Ltd. (PTTAC) Relationship: PTT Global Chemical Plc holds 50.00% shares - Purchase of goods - Accounts payable 2,275 208 1,122 141 1,417 131 - IRPC purchased petrochemical products from PTTAC. 27. PTT Digital Solutions Co., Ltd. (PTT DIGITAL) Relationship: PTT Global Chemical Plc holds 40.00% shares PTT Plc holds 20.00% shares - Sales & admin expenses 30 29 31 - IRPC paid IT service fees to PTT DIGITAL 28. PTT Phenol Co., Ltd. (PPCL) Relationship: PTT Global Chemical Plc. holds 99.99% shares - Other income - Account receivable - - - - 9 3 - IRPC provided storage tank services to PPCL. 29. NPC Safety and Environmental Services Co., Ltd. (NPC S&E) Relationship: PTT Global Chemical Plc. holds 99.99% shares - Sales & admin expenses 2 1 1 - IRPC paid for rent of safety equipment, equipment for testing COVID-19 and training fees to NPC S&E. 30. Global Green Chemicals Plc (GGC) Relationship: PTT Global Chemical Plc holds 72.29% shares - Purchase of goods - Accounts payable 1,578 66 562 39 212 64 - IRPC purchased petroleum products from GGC. 280 IRPC PUBLIC COMPANY LIMITED 56-1 ONE REPORT 2021

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