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Accounting policies (Tables) | 12 Months Ended
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Dec. 31, 2023
Statement [Line Items] |
Estimated Useful Life of Assets | Depreciation is calculated on a straight-line basis over the estimated useful life of the assets as follows:
Buildings and improvements on freehold land |  | : |  | 50 years
Leasehold buildings and improvements |  | : |  | 50 years or period of lease, whichever is shorter
Plant, machinery and equipment |  | : |  | 2 to 20 years
Office furniture, fittings and equipment |  | : |  | 2 to 20 years
Motor and transport vehicles |  | : |  | 4 to 11 years
Disclosure of detailed information about intangible assets useful life | A summary of the policies applied to the Group’s intangible assets is as follows:
|  | Trademarks |  | Technology know-how |  | Development costs
Useful lives |  | Indefinite |  | 6 -10 years |  | *
Amortization method used |  | No amortization |  | Amortized on a straight-line basis over the period of the technology know-how |  | *
Internally generated or acquired |  | Acquired |  | Internally generated |  | Internally generated
| * | Development costs relate to on-going development projects that have not been completed and are not available for use.

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