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Income taxes (Tables) | 12 Months Ended
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Dec. 31, 2023
Components of income tax (expense) / credit |
|  | Year ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
|  | US$’000 |  |  | US$’000 |  |  | US$’000 |
Current taxes (expense ) |  |  |  |  |  |  |  |  |
Hong Kong profits tax and the PRC EIT |  |  | (45 | ) |  |  | - |  |  |  | (57 | )
Income tax expense |  |  | (45 | ) |  |  | - |  |  |  | (57 | )
Deferred tax (expenses) / credit |  |  |  |  |  |  |  |  |  |  |  |
Hong Kong and the PRC |  |  | - |  |  |  | (24 | ) |  |  | 147 |
Total deferred tax (expenses) / credit |  |  | - |  |  |  | (24 | ) |  |  | 147 |
Total (expense) / credit |  |  | (45 | ) |  |  | (24 | ) |  |  | 90 |
Reconciling items from income tax |
|  | Year ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
|  | US$’000 |  |  | US$’000 |  |  | US$’000 |
Income before income taxes |  |  | 1,695 |  |  |  | 563 |  |  |  | 1,276 |
Computed tax using respective companies’ statutory tax rates |  |  | 78 |  |  |  | 131 |  |  |  | 158 |
Change in valuation allowances |  |  | (79 | ) |  |  | 58 |  |  |  | 349 |
Under-provision for income taxes in prior years |  |  | - |  |  |  | - |  |  |  | (12 | )
Non-deductible expenses |  |  | (44 | ) |  |  | (213 | ) |  |  | (405 | )
Income tax (expense) / credit at effective tax rate |  |  | (45 | ) |  |  | (24 | ) |  |  | 90 |
Components of deferred tax assets |
|  | December 31, |
|  | 2023 |  |  | 2022 |
|  | US$’000 |  |  | US$’000 |
Tax losses |  |  | 572 |  |  |  | 649 |
Temporary differences |  |  | - |  |  |  | - |
Less: Valuation allowances |  |  | (469 | ) |  |  | (541 | )
Net deferred tax assets |  |  | 103 |  |  |  | 108 |
ZHEJIANG TIANLAN |
Components of income tax (expense) / credit |
|  | Year ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
|  | RMB’000 |  |  | RMB’000 |  |  | RMB’000 |
Current tax expense / (credit) |  |  |  |  |  |  |  |  |
PRC EIT |  |  | 7,340 |  |  |  | (7 | ) |  |  | (32 | )
Income tax expense / (credit) |  |  | 7,340 |  |  |  | (7 | ) |  |  | (32 | )
Deferred tax expense / (credit) |  |  | 8,729 |  |  |  | (361 | ) |  |  | (666 | )
Total deferred tax expense / (credit) |  |  | 8,729 |  |  |  | (361 | ) |  |  | (666 | )
Total expense / (credit) |  |  | 16,069 |  |  |  | (368 | ) |  |  | (698 | )
Reconciling items from income tax |
|  | Year ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
|  | RMB’000 |  |  | RMB’000 |  |  | RMB’000 |
Income before income tax |  |  | 86,606 |  |  |  | 15,398 |  |  |  | 12,880 |
Computed tax using respective companies’ statutory tax rates |  |  | 12,991 |  |  |  | 2,309 |  |  |  | 1,932 |
(Over)-provision for income tax in prior years |  |  | (591 | ) |  |  | (69 | ) |  |  | (39 | )
Temporary differences |  |  | 2,931 |  |  |  | 2,089 |  |  |  | 401 |
Tax effect of revenue not subject to tax |  |  |  |  |  |  | 3 |  |  |  | - |
Tax effect of expenses not deductible for tax purposes |  |  | 4,472 |  |  |  | 500 |  |  |  | 286 |
Tax effect of special deduction for research and development costs |  |  | (3,734 | ) |  |  | (5,257 | ) |  |  | (3,263 | )
Others |  |  |  |  |  |  | 57 |  |  |  | 15 |
Income taxes expense /(credit) at effective tax rate |  |  | 16,069 |  |  |  | (368 | ) |  |  | (698 | )
Components of deferred tax assets |
|  | December 31, |
|  | 202 3 |  |  | 202 2 |
|  | RMB’000 |  |  | RMB’000 |
Allowance for doubtful accounts |  |  | 4,218 |  |  |  | 5,680 |
Deferred government grant |  |  | 213 |  |  |  | 154 |
Impairment losses on assets |  |  | 1,508 |  |  |  | 5,978 |
Tax losses |  |  | - |  |  |  | 2,854 |
Total deferred tax assets |  |  | 5,939 |  |  |  | 14,666 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 9 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-9 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 12 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 + Details
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