- 55 - Unit : Million Baht Separate financial statements Production Computer Right to use Right to use Intangible assets under licence fees software pipe rack others development Total Cost As at January 1, 2020 5,792 3,832 454 - 382 10,460 Effect from first-time adoption of new accounting policy - - (403) - - (403) Additions 213 16 - - 428 657 Transfers 25 344 (51) 61 (379) - As at December 31, 2020 and January 1, 2021 6,030 4,192 - 61 431 10,714 Additions 8 36 - - 340 384 Transfers 63 516 - - (579) - Disposals - (429) - - - (429) As at December 31, 2021 6,101 4,315 - 61 192 10,669 Accumulated amortisation As at January 1, 2020 (2,047) (2,249) (333) - (22) (4,651) Effect from first-time adoption of new accounting policy - - 316 - - 316 Amortisation charge for the year (243) (298) (2) (4) -. (547) Transfers - - 19 (19) - - As at December 31, 2020 and January 1, 2021 (2,290) (2,547) - (23) (22) (4,882) Amortisation charge for the year (315) (324) - (6) - (645) Disposals - 311 - - - 311 As at December 31, 2021 (2,605) (2,560) - (29) (22) (5,216) Net book value As at January 1, 2020 3,745 1,583 34 - 360 5,722 As at December 31, 2020 and January 1, 2021 3,740 1,645 - 38 409 5,832 As at December 31, 2021 3,496 1,755 - 32 170 5,453 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED AND SUBSIDIARIES FOR THE YEAR ENDED DECEMBER 31, 2021 NOTES TO THE FINANCIAL STATEMENTS 287 BUSINESS OPERATION AND PERFORMANCE CORPORATE GOVERNANCE FINANCIAL REPORTS AND FINANCIAL STATEMENTS APPENDIX
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