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Property, Plant and Equipment
 9 Months Ended
Sep. 30, 2019
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT

NOTE 3 – PROPERTY, PLANT AND EQUIPMENT

 

Property, plant and equipment consisted of the following:

 

   September 30,   December 31, 
   2019   2018 
Permit of land use  $398,235   $409,612 
Building   9,247,632    9,511,832 
Plant, machinery and equipment   25,909,977    26,576,409 
Motor vehicle   304,118    312,807 
Office equipment   204,115    198,292 
Total   36,064,077    37,008,952 
Less: accumulated depreciation   (19,366,821)   (17,714,573)
Property, Plant and Equipment, net  $16,697,256   $19,294,379 

 

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 $677,395 and $942,555 for the three months ended September 30, 2019 and 2018, respectively and $2,212,731 and $2,405,396 for the nine months ended September 30, 2019 and 2018, respectively.