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INCOME TAX EXPENSE | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022
Notes and other explanatory information [abstract] |  |
INCOME TAX EXPENSE |
| 7. | INCOME TAX EXPENSE
The Company is incorporated in the BVI and conducts its primary business operations through its subsidiaries in mainland China. It also has intermediate holding companies in the BVI and Hong Kong. Under the current laws of the BVI, the Company and its subsidiaries incorporated in the BVI are not subject to tax on income or capital gains. The Hong Kong Profits Tax rate is 16.50%. The Company’s Hong Kong subsidiaries have both Hong Kong–sourced and non-Hong Kong–sourced income. The latter is not subject to Hong Kong Profits Tax and the related expenses are non-tax-deductible. For the Hong Kong–sourced income, no provision for Hong Kong Profits Tax was made as such operations sustained tax losses during the six months ended June 30, 2022 and 2023. Furthermore, there are no withholding taxes in Hong Kong on the remittance of dividends. China Under the Law of the PRC on corporate income tax and the Implementation Regulation of the Corporate Income Tax Law (collectively, the “CIT Law”), the Company’s PRC subsidiaries are generally subject to PRC corporate income tax at the statutory rate of 25% on their respective estimated assessable profits for the six months ended June 30, 2022 and 2023. Certain PRC subsidiaries of the Company engaged in environmental protection projects were subject to tax at a preferential tax rate of 12.5% or fully exempted from income tax according to the preferential policy of CIT law for the six months ended June 30, 2022 and 2023. Under the prevailing CIT Law and its relevant regulations, any dividends paid by the Company’s mainland China subsidiaries from their earnings derived after January 1, 2008 to the Company’s Hong Kong subsidiaries are subject to PRC dividend withholding tax of 5% or 10%, depending on the applicability of the Sino-Hong Kong tax treaty. The current and deferred components of income tax expense are as follows:
Schedule of deferred components of income tax expense |  |  |  |  |  |  |  |  |
|  | Six months ended June 30, |
|  | 2022 |  |  | 2023 |  |  | 2023 |
|  | CNY |  |  | CNY |  |  | US$ |
|  | (Unaudited) |  |  | (Unaudited) |  |  | (Unaudited) |
Current income tax expense |  |  | 1,548 |  |  |  | 1,837 |  |  |  | 254 |
Deferred income tax benefit |  |  | (1,191 | ) |  |  | (10 | ) |  |  | (2 | )
Total |  |  | 357 |  |  |  | 1,827 |  |  |  | 252 |
| 8. INCOME TAX EXPENSE The Company is incorporated in the BVI and conducts its primary business operations through its subsidiaries in the PRC. It also has intermediate holding companies in the BVI and Hong Kong. Under the current laws of the BVI, the Company and its subsidiaries incorporated in the BVI are not subject to tax on income or capital gains. The Hong Kong Profits Tax rate is 16.50%. The Company’s Hong Kong subsidiaries have both Hong Kong–sourced and non-Hong Kong–sourced income. The latter is not subject to Hong Kong Profits Tax and the related expenses are non-tax-deductible. For the Hong Kong–sourced income, no provision for Hong Kong Profits Tax was made as such operations sustained tax losses during the years ended December 31, 2020, 2021 and 2022. Furthermore, there are no withholding taxes in Hong Kong on the remittance of dividends. China Under the law of the PRC on corporate income tax and the Implementation Regulation of the Corporate Income Tax Law (collectively, the “CIT Law”), the Company’s PRC subsidiaries are generally subject to PRC corporate income tax at the statutory rate of 25% on their respective estimated assessable profits for the years ended December 31, 2020, 2021 and 2022. Certain PRC subsidiaries of the Company engaged in environmental protection projects were subject to tax at a preferential tax rate of 12.5% or fully exempted from income tax according to the preferential policy of the CIT law for the years ended December 31, 2020, 2021 and 2022. Under the prevailing CIT Law and its relevant regulations, any dividends paid by the Company’s PRC subsidiaries from their earnings derived after January 1, 2008 to the Company’s Hong Kong subsidiaries are subject to PRC dividend withholding tax of 5% or 10%, depending on the applicability of the Sino-Hong Kong tax treaty. The current and deferred components of income tax expense are as follows:
Schedule of deferred components of income tax expense |  |  |  |  |  |  |  |  |  |  |  |
|  | Year Ended December 31, |
|  | 2020 |  |  | 2021 |  |  | 2022 |  |  | 2022 |
|  | CNY |  |  | CNY |  |  | CNY |  |  | US$ |
Current income tax (benefit)/expense |  |  | (4,436 | ) |  |  | 2,294 |  |  |  | 3,066 |  |  |  | 445 |
Deferred income tax expense/(benefit) |  |  | 5,694 |  |  |  | (159 | ) |  |  | 2,798 |  |  |  | 405 |
Total |  |  | 1,258 |  |  |  | 2,135 |  |  |  | 5,864 |  |  |  | 850 |
Profit/(loss) before income tax consists of the following:
Schedule of Profit/(loss) before income tax |  |  |  |  |  |  |  |  |  |  |  |
|  | Year Ended December 31, |
|  | 2020 |  |  | 2021 |  |  | 2022 |  |  | 2022 |
|  | CNY |  |  | CNY |  |  | CNY |  |  | US$ |
PRC |  |  | (1,214 | ) |  |  | (4,669 | ) |  |  | 6,406 |  |  |  | 929 |
BVI |  |  | 25,442 |  |  |  | (48,106 | ) |  |  | (22,776 | ) |  |  | (3,303 | )
Hong Kong |  |  | (49 | ) |  |  | (61 | ) |  |  | (62 | ) |  |  | (9 | )
Total profit/(loss) before income tax for the year |  |  | 24,179 |  |  |  | (52,836 | ) |  |  | (16,432 | ) |  |  | (2,383 | )
A reconciliation of the income taxes computed at the PRC statutory tax rate of 25% to the actual income tax expense is as follows:
Schedule of reconciliation of the income tax expenses |  |  |  |  |  |  |  |  |  |  |  |
|  | Year Ended December 31, |
|  | 2020 |  |  | 2021 |  |  | 2022 |  |  | 2022 |
|  | CNY |  |  | CNY |  |  | CNY |  |  | US$ |
Profit/(loss) before income tax for the year |  |  | 24,179 |  |  |  | (52,836 | ) |  |  | (16,432 | ) |  |  | (2,383 | )
Tax at the statutory tax rate |  |  | 25 | % |  |  | 25 | % |  |  | 25 | % |  |  | 25 | %
Computed income tax expense/(benefit) |  |  | 6,045 |  |  |  | (13,209 | ) |  |  | (4,108 | ) |  |  | (596 | )
Effect of different tax rates of the Company and certain subsidiaries |  |  | (1,186 | ) |  |  | 6,937 |  |  |  | 5,699 |  |  |  | 826 |
Tax losses with no deferred tax assets recognized |  |  | 1,067 |  |  |  | 1,770 |  |  |  | 420 |  |  |  | 61 |
Non-deductible expenses |  |  | 196 |  |  |  | 122 |  |  |  | 983 |  |  |  | 143 |
Statutory income |  |  | (903 | ) |  |  | — |  |  |  | (201 | ) |  |  | (29 | )
Deductible temporary differences with no deferred tax assets recognized |  |  | — |  |  |  | — |  |  |  | 971 |  |  |  | 141 |
Utilization of previously unrecognized deductible temporary differences and tax losses |  |  | (50 | ) |  |  | (150 | ) |  |  | (1,774 | ) |  |  | (257 | )
Write-off of unrecoverable deferred tax assets previously recognized |  |  | — |  |  |  | 2,987 |  |  |  | 2,272 |  |  |  | 329 |
Preferential tax rate |  |  | 2,038 |  |  |  | 2,215 |  |  |  | 14 |  |  |  | 2 |
Current and deferred tax rate differences |  |  | (488 | ) |  |  | — |  |  |  | — |  |  |  | — |
Others |  |  | (5,461 | )* |  |  | 1,463 |  |  |  | 1,588 |  |  |  | 230 |
Income tax expense |  |  | 1,258 |  |  |  | 2,135 |  |  |  | 5,864 |  |  |  | 850 |
* | It mainly represents the reversal of a prior withholding CIT payable which is no longer required to be paid according to the prevailing CIT Law and penalties for overdue income tax payment.
The Company’s provision for income tax related to uncertain tax position including in the tax payables for the years ended December 31, 2021 and 2022 is as follows:
Schedule of provision for uncertain tax position |  |  |  |  |  |  |  |  |
|  | Year Ended December 31, |
|  | 2021 |  |  | 2022 |  |  | 2022 |
|  | CNY |  |  | CNY |  |  | US$ |
As of January 1 |  |  | 8,378 |  |  |  | 8,378 |  |  |  | 1,215 |
Additions based on tax positions |  |  | — |  |  |  | 630 |  |  |  | 91 |
As of December 31 |  |  | 8,378 |  |  |  | 9,008 |  |  |  | 1,306 |

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- Definition The entire disclosure for income taxes. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2023-01-01 -Section Disclosure -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2023-en-r&doctype=Standard&dita_xref=IAS12_g79-88_TI -URIDate 2023-03-23 + Details
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