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LONG-TERM INVESTMENTS AND EQUITY METHOD INVESTMENT - Available for sale investments - (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2019 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Long-term available-for-sale investments |  | $ 4,410,382 | $ 4,066,490 |
Alphalion Technology Holding Limited ("Alphalion") |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Long-term available-for-sale investments | $ 3,060,113 | 4,410,382 | 4,066,490 |
Percentage of equity interest acquired | 25.00% |  |  |
Fair value change recorded |  | 343,892 | (450,325) | $ 502,903
Allowance for credit losses |  | $ 0 | $ 0 | $ 0

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