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PRC statutory reserves (Details Narrative) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Statutory Reserve Fund |  |  |
Statutory reserve | $ 2,500,000 | $ 2,531,000 | $ 2,452,000
Minimum Registered capital percentage | 25.00% |  |
Registered capital percentage | 50.00% |  |
Net income statutory reserve fund | 10.00% |  |
Statutory Staff Welfare Fund |  |  |
Statutory reserve | $ 12,000 | 12,000 |
Enterprise Expansion Fund |  |  |
Statutory reserve | $ 408,000 | $ 408,000 |
Minimum Registered capital percentage | 25.00% |  |

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