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Segment Information - Geographic information about revenues (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues $ 55,263,673 $ 42,283,670 $ 49,230,570
CHINA [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues 55,263,673 42,283,670 49,230,570
Foreign Countries [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues $ 0 $ 0 $ 0