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Property, Plant and Equipment (Tables)
 6 Months Ended
Jun. 30, 2025
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment

Property, plant and equipment consisted of the following:

 

   June 30,   December 31, 
   2025   2024 
Permit of land use  $393,467   $391,836 
Building   9,136,923    9,099,045 
Plant, machinery and equipment   27,004,192    26,835,227 
Motor vehicle   393,270    265,255 
Office equipment   266,360    390,434 
Total   37,194,212    36,981,797 
Less: accumulated depreciation   (32,568,305)   (32,098,396)
Property, plant and equipment, net  $4,625,907   $4,883,401 
Schedule of Estimated Useful Lives of the Assets

Depreciation is computed on a straight-line basis over the estimated useful lives of the assets as follows:

 

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