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Lease (Details) - Schedule of operating lease arrangements - USD ($)
Mar. 31, 2021
Dec. 31, 2020
ASSETS    
Operating lease right-of-use assets $ 1,714,740 $ 1,772,747
LIABILITIES    
Operating lease liabilities (current) 331,179 316,178
Operating lease liabilities (noncurrent) $ 1,383,560 $ 1,456,567