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Deferred Tax, Net (Tables)
 6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Deferred Tax Assets Liabilities Net Disclosure [Abstract]    
Schedule of deferred tax liability
   2021   2020 
Accrued expenses  $70,721   $70,019 
Write-off Erdos TCH net investment in sales-type leases   6,536,960    6,155,300 
US NOL   533,834    254,035 
PRC NOL   10,642,867    10,849,690 
Total deferred tax assets   17,784,382    17,329,044 
Less: valuation allowance for deferred tax assets   (17,784,382)   (17,329,044)
Deferred tax assets, net  $
-
   $
-
 
   2020   2019 
Non-current deferred tax assets        
Accrued expenses  $70,019   $189,050 
Interest income in sales-type leases on cash basis   
-
    853,265 
Depreciation of fixed assets   
-
    2,938,605 
Assets impairment loss   
-
    7,537,556 
Write-off Erdos TCH net investment in sales-type leases   6,155,300    6,349,604 
US NOL   254,035    3,246,655 
PRC NOL   10,849,690    10,424,558 
           
Non-current deferred tax liabilities          
Net investment in sales-type leases   
-
    (6,685,021)
           
Net non-current deferred tax assets   17,329,044    24,854,272 
Less: valuation allowance for deferred tax assets   (17,329,044)   (24,854,272)
Non-current deferred tax assets, net  $
-
   $
-