STOCK-BASED COMPENSATION - Stock-based compensation expenses (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
STOCK-BASED COMPENSATION
Total stock compensation expenses	$ 195,735	$ 13,986	$ 374,157	$ 393,130
Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense
STOCK-BASED COMPENSATION
Total stock compensation expenses	195,392	12,358	373,359	85,993
Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense
STOCK-BASED COMPENSATION
Total stock compensation expenses	$ 343	$ 1,628	$ 798	$ 307,137

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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