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The following table sets forth the ROU assets and operating lease liabilities as of June 30, 2021: (Details) - USD ($)
Jun. 30, 2021
Dec. 31, 2020
Assets    
ROU assets-net $ 3,223,540 $ 4,075,048
Liabilities    
Current operating lease liabilities 1,848,291 1,819,237
Long-term operating lease liabilities 1,607,917 $ 2,537,149
      Total ROU liabilities $ 3,456,208