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Property, Plant and Equipment
 9 Months Ended
Sep. 30, 2025
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT

NOTE 4 – PROPERTY, PLANT AND EQUIPMENT

 

Property, plant and equipment consisted of the following:

 

   September 30,   December 31, 
   2025   2024 
Permit of land use  $396,407   $391,836 
Building   9,205,204    9,099,045 
Plant, machinery and equipment   27,206,451    26,835,227 
Motor vehicle   268,350    265,255 
Office equipment   396,209    390,434 
Total   37,472,621    36,981,797 
Less: accumulated depreciation   (32,970,142)   (32,098,396)
Property, plant and equipment, net  $4,502,479   $4,883,401 

 

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

 

Depreciation relating to office equipment was included in general and administrative expenses, while all other depreciation was included in cost of revenue. Depreciation expense was $158,076 and $592,099 for the three months ended September 30, 2025 and 2024, respectively and $493,180 and $1,863,079 for the nine months ended September 30, 2025 and 2024, respectively.