IRPC One Report EN

No. Connected Party/ Relationship Transaction 2021 2020 2019 Nature and Condition 31. Solution Creation Company Limited (SOLUTIONCRE) Relationship: PTT Global Chemical Plc holds 99.99% shares - Sale of goods 3 - - - IRPC sold polymer products to SOLUTIONCRE. 32. GCM Polymer Trading DMCC Relationship: GC Marketing Solutions Co., Ltd. holds 100% shares - Sale of goods - Account receivable 127 - 77 3 128 5 - IRPC sold polymer products to GCM Polymer Trading DMCC. 33. IRPC Clean Power Co., Ltd. (IRPC-CP) Relationship: Global Power Synergy Plc holds 51.00% shares IRPC Plc holds 48.99% shares - Common directors: Mrs. Nidcha Jirametthanakij Mr. Somkiat Lertritpuwadol Mr. Woravuth Sivapetranart - Sale of goods - Purchase of goods - Other income - Account receivable - Accounts payable - Other receivables - Other payables 44 2,305 118 4 228 1 189 45 2,296 117 4 190 - 215 45 2,356 116 8 341 1 213 - IRPC sold electricity and water to IRPC-CP. - IRPC purchased steam from IRPC-CP. - IRPC provided services relating to power plants to IRPC-CP. 34. PTT Treasury Center Co., Ltd. (PTTTCC) Relationship: PTT Plc holds 99.99% shares - Long-term loan 31 - - - Subsidiary borrowed from PTTTCC Notes: (1) Thai Oil Marine Co., Ltd. is not a related party of the group of companies since April 30, 2021. (2) Ubon Bio Ethanol Plc is not a related party of the group of companies since September 27, 2021. (3) Dhipaya Insurance Plc (TIP) is not a related party of the group of companies from August 31, 2021. 281 Internal Control and Connected Transaction IRPC PUBLIC COMPANY LIMITED

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