LONG-TERM BORROWINGS - Interest expenses (Details) - USD ($)	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
LONG-TERM BORROWINGS
Interest expenses	$ 6,278	$ 9,279

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration