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Intangible Assets, Net (Tables)
9 Months Ended
Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of intangible assets
   December 31,
2021
   September 30,
2022
 
Computer software at cost  $108,560   $96,954 
Sewage discharge permit*    1,915,740    1,710,918 
     2,024,300    1,807,872 
Accumulated amortization    (62,561)   (424,083)
   $1,961,739   $1,383,789