GC One Report 2023 [EN]

PTT Global Chemical Public Company Limited and its Subsidiaries For the year ended 31 December 2023 PTT Global Chemical Public Company Limited and its Subsidiaries Notes to the financial statements For the year ended 31 December 2023 105 Sensitivity analysis A reasonably possible strengthening (weakening) of Thai Baht against all other foreign currencies at the reporting date would have affected the measurement of financial instruments denominated in a foreign currency. This analysis assumes that all other variables, in particular interest rates, remain constant. Consolidated financial statements Separate financial statements Impact to profit or loss Movement Strengthening Weakening Strengthening Weakening (%) (in million Baht) 2023 USD 10 - Net gain (loss) on foreign exchange rate (4,182) 4,182 2,672 (2,672) - Other equity - gain (loss) on cash flow hedges (88) 88 - - EUR 9 - Net gain (loss) on foreign exchange rate (122) 122 (4,631) 4,631 2022 USD 10 - Net gain (loss) on foreign exchange rate (4,498) 4,498 3,902 (3,902) - Other equity - gain (loss) on cash flow hedges (32) 32 (32) 32 EUR 10 - Net gain (loss) on foreign exchange rate (68) 68 (4,764) 4,764 In addition to forward exchange contracts, the Group uses derivatives financial instruments, principally currency swaps and interest rate swaps, to manage exposure to fluctuations in exchange rates and interest rates. As at 31 December 2023, the Group has entered into foreign currency and interest rate swap contracts, totalling Baht 30,690 million (2022: Baht 41,291 million). Some of Sustainability-Linked currency swaps and interest rate swaps, the interest rates will be adjusted down in line with operational achievements of Sustainability Performance Targets (or SPTs) according to the agreement. 349 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2023

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