Annual report pursuant to Section 13 and 15(d)

Income Taxes - Income tax expense (Details)

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Income Taxes - Income tax expense (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]    
U.S. statutory rate $ 1,896,305 $ 1,822,092
Items not allowed for tax purposes (2,113,651) (1,142,776)
Foreign tax rate differential (90,772) (66,163)
Additional foreign taxation (36,939) (15,190)
Witholding tax on dividends (162,112)
Prior year over provision 1,167
Prior year net operating loss adjustment   (917,820)
Movement in valuation allowances (323,114) (279,486)
Other differences (76,361)
Effective tax rate (906,644) (598,176)
Current (837,973) (683,830)
Witholding tax (162,112)  
Deferred $ 93,441 $ 85,654