Other Non-current Assets (Tables)
 12 Months Ended
Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of Other Non-current Assets
Other non-current assets consisted of the following:
As of December 31,
20192020
(US$)
Long-term deposits$470,086 $1,023,755 
Deferral of initial public offering costs287,331 — 
Others51,445 580,182 
$808,862 $1,603,937