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INTANGIBLE ASSETS, NET -Schedule of Estimated Future Amortization Expense (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Estimated future amortization expense    
2021 $ 1,895,588  
2022 1,680,660  
2023 1,323,276  
2024 1,266,833  
2025 1,078,630  
Thereafter 2,152,454  
Net Carrying Amount $ 9,397,441 $ 11,243,800