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Property, Plant and Equipment (Tables)
 3 Months Ended
Mar. 31, 2025
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment

Property, plant and equipment consisted of the following:

 

 

   March 31,   December 31, 
   2025   2024 
Permit of land use  $392,393   $391,836 
Building   9,111,974    9,099,045 
Plant, machinery and equipment   26,930,458    26,835,227 
Motor vehicle   265,632    265,255 
Office equipment   392,196    390,434 
Total   37,092,653    36,981,797 
Less: accumulated depreciation   (32,315,553)   (32,098,396)
Property, plant and equipment, net  $4,777,100   $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