IRPC Annual Report 2023

36 During the year ended 31 December 2023, the Group capitalised borrowing costs into the construction project of Baht 409 million (2022: Baht 115 million) (the Company only: Baht 408 million, 2022: Baht 114 million) arising from financing specifically for the construction of new factories. The Group used the capitalisation rates between 2.00 percent and 6.69 percent (2022: between 3.01 percent and 5.35 percent) to calculate the capitalised borrowing costs which is the weighted average rate of financial charges on borrowings and debentures. As at 31 December 2023, certain items of plant and equipment were fully depreciated but are still in use. The gross carrying amount before deducting accumulated depreciation and allowance for impairment loss of those assets amounted to approximately Baht 22,032 million (2022: Baht 19,215 million) (the Company only: Baht 18,751 million, 2022: Baht 18,662 million). 16. Intangible assets Movements of intangible assets for the years ended 31 December 2023 and 2022 are summerised below. (Unit: Million Baht) Consolidated financial statements Dredging expenses Computer software Computer software under installation Total Cost 1 January 2022 454 1,532 246 2,232 Additions - 6 73 79 Transfers in (out) - 78 (78) - 31 December 2022 454 1,616 241 2,311 Additions - 4 195 199 Transfers in (out) - 29 (29) - Reclassification to property, plant and equipment - - (38) (38) 31 December 2023 454 1,649 369 2,472 Accumulated amortisation 1 January 2022 303 1,168 - 1,471 Amortisation for the year 23 122 - 145 31 December 2022 326 1,290 - 1,616 Amortisation for the year 17 113 - 130 31 December 2023 343 1,403 - 1,746 329 56-1 ONE REPORT 2023 Notes to the Consolidate Financial Statements

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