IRPC Annual Report 2023

No. Company name and relationship Transaction (Unit: Million Baht) Characteristics and conditions 2023 2022 2021 26. Solution Creation Co., Ltd. (SOLUTION CRE) Relationship: PTT Global Chemical Public Company Limited holds 99.99% of shares - Sale of goods - 4 3 IRPC sold polymer products to SOLUTION CRE. 27. GCM Polymer Trading DMCC (GCM DMCC) Relationship: GC Marketing Solutions Co., Ltd. holds 100% of shares - Sale of goods - 49 127 IRPC sold polymer products to GCM DMCC. 28. IRPC Clean Power Co., Ltd. (IRPC-CP) Relationship: Global Power Synergy Public Company Limited (GPSC) holds 51.00% of shares. IRPC Public Company Limited holds 48.99% of shares. - Common directors: Mr. Phijin Apiwanthanaporn Mr. Worawut Sivapetcharanat Mr. Pranat Kosayanon - Sale of goods - Purchase of goods - Sales and admin expenses - Other income - Accounts receivable - Accounts payable - Other receivables - Other payables 44 3,163 2 120 5 281 - 244 42 3,206 2 119 4 211 - 227 44 2,305 - 118 4 228 1 189 IRPC sold electricity and water to IRPC-CP IRPC purchased steam from IRPC-CP. IRPC subsidiaries paid for electricity to IRPC-CP. IRPC provided related services to power plants to IRPC-CP. 29. Combined Heat and Power Producing Co., Ltd. (CHPP) Relationship: Global Power Synergy Public Company Limited (GPSC) holds 99.99% of shares. - Sale of goods 14 3 - IRPC sold petrochemical products to CHPP. 30. GC Polyols Co., Ltd. (GC POLYOLS) Relationship: PTT Global Chemical Public Company Limited holds 82% of shares. - Sale of goods 14 - - IRPC sold petrochemical products to GC POLYOLS. 31. Thai Lube Base Public Company Limited (TLB) Relationship: Thaioil Public Company Limited holds 99.99% of shares. - Sale of goods 89 - - IRPC sold aromatics products to TLB. 32. Thai Lube Blending Co., Ltd. (TLBC) Relationship: PTT Oil and Retail Business Public Company Limited holds 99.99% of shares. - Purchase of goods 27 - - IRPC purchased petroleum products from TLBC. 33. PTT MEA Ltd. (PTTMEA) Relationship: PTT Public Company Limited holds 100% of shares. - Purchase of goods - Other receivables (7) 4 (10) - - - IRPC received a share of compensation in the form of administrative fee for the purchase and sale of crude oil and products within PTT Group. 276 Internal Control and Connected Transactions IRPC Public Company Limited

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