SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Receivables and Contract Liabilities from Contracts with Customers (Details) - USD ($)	Jun. 30, 2026	Dec. 31, 2025
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Accounts receivable, net	$ 1,492,819	$ 1,426,094
Less: accounts receivable, net, held for discontinued operation	0	(144,856)
Accounts receivable, net, held for continuing operation	1,492,819	1,281,238
Contract liabilities	5,679,876	3,106,185
Less: contract liabilities, held for discontinued operation	0	(84,641)
Contract liabilities, held for continuing operation	$ 5,679,876	$ 3,021,544