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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2024
Accounting Policies [Abstract] |
Schedule of allowance for doubtful accounts | The table below presents the movement of allowance for doubtful accounts from customers for the year ended December 31, 2023 and 2024.
|  | 2023 |  |  | 2024 |
|  | US$ |  |  | US$ |
Balance as of January 1, |  |  | 696,508 |  |  |  | 991,286 |
Additional/(Reversal) |  |  | 294,778 |  |  |  | 14,292,716 |
Write-off |  |  | — |  |  |  | — |
Balance as of December 31, |  |  | 991,286 |  |  |  | 15,284,002 |
Schedule of estimated useful lives of property, plant and equipment | Depreciation is calculated on a straight‑line basis over the following estimated useful lives:
Electronic equipment |  | 3 years
Office equipment |  | 5-14.25 years
Software |  | 3-5 years
Leasehold improvement |  | Shorter of the lease terms or the estimated useful lives of the assets

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- Definition Tabular disclosure of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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