IRPC One Report EN

No. Connected Party/ Relationship Transaction 2021 2020 2019 Nature and Condition 17. Sport Services Alliance Co., Ltd. (SSA) Relationship: Business Services Alliance Co., Ltd. holds 99.99% shares - Common director: Air Marshal Boonsuib Prasit - Service income - Sales & admin expenses - - - - 2 5 - IRPC Technology Co., Ltd. provided facilities management services to SSA. - IRPC provided public relations expenses for PTT Rayong football team to SSA. 18. PTTEP International Co., Ltd. (PTTEPI) Relationship: PTTEP Plc holds 99.99% shares - Sales & admin expenses - - 2 - IRPC paid for security audit to PTTEPI. 19. Global Power Synergy Plc (GPSC) Relationship: PTT Plc holds 42.53% shares - Other income - Sales & admin expenses 7 2 11 - - - - IRPC provides research services to GPSC. - IRPC paid personnel wages to GPSC. 20. PTT Global Chemical Plc (GC) Relationship: PTT Plc holds 45.18% shares - Sale of goods - Purchase of goods - Trade in crude and feedstocks for legal reserves - Sales & admin expenses - Account receivable - Accounts payable 8,754 14,459 - 40 1,460 2,429 5,996 11,263 - 4 595 939 13,413 19,312 405 7 1,200 1,721 - IRPC sold petroleum products to GC. - IRPC purchased petroleum products from GC. - IRPC traded in crude and feedstocks for legal reserves with GC. - IRPC paid personnel wages and compensation for goods to GC. 21. GC Marketing Solutions Co., Ltd. (GCM) Relationship: PTT Global Chemical Plc holds 99.99% shares - Sale of goods - Purchase of goods - Account receivable - Accounts payable 333 405 27 33 118 286 20 25 124 377 19 13 - IRPC sold polymer products to GCM. - IRPC purchased polymer products from GCM. 22. GC Logistics Solutions Co., Ltd. (GCL) Relationship: PTT Global Chemical Plc holds 99.99% shares - Sales & admin expenses 2 5 5 - IRPC paid GCL for transportation services. 279 Internal Control and Connected Transaction IRPC PUBLIC COMPANY LIMITED

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