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Construction in Progress (Tables)
9 Months Ended
Sep. 30, 2020
Construction in Progress [Abstract]  
Schedule of construction in progress
   December 31,   September 30, 
   2019   2020 
Construction in progress  $21,613,577   $15,051,124 
Prepayment for acquisition of property, plant and equipment   94,047    403,101 
Carrying amount  $21,707,624   $15,454,225