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Related party balances and transactions (Details) - USD ($) | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Related Party Transaction [Line Items] |  |
Total | $ 247,328 | $ 1,279
Beijing Runmei Advertising Co L T D [Member] |  |
Related Party Transaction [Line Items] |  |
Total | 247,328 |
C Rservices [Member] |  |
Related Party Transaction [Line Items] |  |
Total |  | $ 1,279

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