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Administrative Expenses (Tables)
12 Months Ended
Dec. 31, 2021
Disclosure of general and administrative expense [text block] [Abstract]  
Schedule of administrative expenses
   For the years ended
December 31,
 
   2021   2020   2019 
Staff expense  $3,471,146   $2,759,505   $2,201,515 
Rental expense*   24,551    702,664    547,513 
Depreciation and amortization expense   1,261,988    167,380    153,316 
Utilities expense   93,736    120,236    131,810 
Travelling and entertainment expense   148,063    138,707    108,021 
Professional fees   1,183,499    932,891    391,273 
Repairs and maintenance   71,990    70,443    104,813 
Employee benefits   153,454    548,628    358,287 
Other service fees   240,328    273,333    282,322 
Other expenses**   933,288    960,685    474,696 
   $7,582,043   $6,674,472   $4,753,566