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LEASES, Net Operating Lease Expenses (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2021
Sep. 30, 2020
Net Operating Lease Expense [Abstract]      
Operating lease expense $ 187,498 $ 501,097  
Sublease income (21,045) (62,116) $ (62,116)
Variable lease expense 5,625 15,977  
Total lease expense $ 172,078 $ 454,958