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Earnings per share (Tables) | 12 Months Ended
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Dec. 31, 2023
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Summary of Earnings Per Share | Basic earnings per share The calculation of basic earnings per share is based on:
|  | 31.12.2021 |  |  | 31.12.2022 |  |  | 31.12.2023 |  |  | 31.12.2023 |
|  | RMB’000 |  |  | RMB’000 |  |  | RMB’000 |  |  | US$’000 |
Profit attributable to equity holders of the Company |  |  | 272,673 |  |  |  | 218,581 |  |  |  | 285,518 |  |  |  | 40,193 |
Weighted average number of ordinary shares |  |  | 40,858,290 |  |  |  | 40,858,290 |  |  |  | 40,858,290 |  |  |  | 40,858,290 |
Diluted earnings per share The weighted average number of ordinary shares adjusted for the effect of unissued ordinary shares under the Share Option Scheme is determined as follows:
|  | 31.12.202 1 |  |  | 31.12.202 2 |  |  | 31.12.2023 |
Weighted average number of shares issued, used in the calculation of basic earnings per share |  |  | 40,858,290 |  |  |  | 40,858,290 |  |  |  | 40,858,290 |
Diluted effect of share options |  |  | — |  |  |  | — |  |  |  | — |
Weighted average number of ordinary shares adjusted for effect of dilution |  |  | 40,858,290 |  |  |  | 40,858,290 |  |  |  | 40,858,290 |

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- Definition The disclosure of earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2023-01-01 -Paragraph 66 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2023-en-r&anchor=para_66&doctype=Standard -URIDate 2023-03-23 + Details
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