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CAPITAL LEASE OBLIGATION - Future minimum principal and interest payments under capital lease arrangements (Details) - USD ($)
Jun. 30, 2021
Dec. 31, 2020
Capital Lease Obligation    
2021 $ 3,640  
2022 7,280  
2023 1,214  
Less: Amount representing interest (504)  
Present value of future minimum lease payments 11,630  
Less: current portion (6,648)  
Capital lease obligations $ 4,982 $ 8,240