XML 51 R30.htm IDEA: XBRL DOCUMENT v3.21.2
Taxes (Tables)
12 Months Ended
Dec. 31, 2020
Income Tax Disclosure [Abstract]  
Schedule of provision for income taxes
   For the years ended December 31, 
   2020   2019   2018 
             
Current  $109   $11,164   $113,088 
Deferred   (80,641)   (224,511)   (69,898)
Total income tax (benefits) expenses  $(80,532)  $(213,347)  $43,190 
Schedule of effective tax rate
   For the years ended December 31, 
   2020   2019   2018 
             
PRC statutory rates   25.0%   25.0%   25.0%
Preferential tax rates   (25.0)%   (16.9)%   (9.9)%
R&D credits   1.7%   (3.4)%   (4.0)%
Change in valuation allowance and others   (1.3)%   (2.8)%   1.6%
Effective tax rate   0.4%   1.9%   2.7%
Schedule of deferred tax assets
   As of December 31, 
   2020   2019 
         
Deferred tax assets:        
Provision for doubtful accounts  $302,536   $255,119 
Depreciation and amortization   112,595    53,992 
Net operating loss carryforward   517,537    272,815 
Valuation allowance   (517,537)   (272,815)
Total deferred tax assets  $415,131   $309,111 
Schedule of taxes payable
   As of December 31, 
   2020   2019 
         
Income taxes payable  $565,506   $539,437 
VAT and other tax payable   133,429    330,476 
Totals  $698,935   $869,913