LEASES - Information related to operating lease activity (Details) - USD ($) |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2023 |
|
| Operating lease rental expense | ||
| Amortization of right-of-use assets | $ 80,997 | $ 70,021 |
| Expense for short-term leases within 12 months | 28,427 | 27,275 |
| Interest of lease liabilities | 3,848 | 5,012 |
| Total operating lease rental expense | $ 113,272 | $ 102,308 |