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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Schedule of property, plant and equipment
   December 31,   December 31, 
   2021   2020 
Permit of land use  $441,783   $431,681 
Building   10,258,885    10,024,303 
Plant, machinery and equipment   30,122,235    29,018,708 
Motor vehicle   337,375    329,660 
Office equipment   278,892    259,175 
Total   41,439,170    40,063,527 
Less: accumulated depreciation   (28,158,611)   (24,499,327)
Property, plant and equipment, net  $13,280,559   $15,564,200 

 

Schedule of estimated useful lives of the assets
Asset    Life - years
Permit of land use   40 - 70
Building   20 - 49
Plant, machinery and equipment   5 - 10
Motor vehicle   5 - 10
Office equipment   3 - 5