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INTANGIBLE ASSETS - Summary of amortization expenses (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Amortization expenses      
General and administrative expenses $ 78,616 $ 22,179 $ 7,327
Total $ 78,616 $ 22,179 $ 7,327