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Property, Plant and Equipment
 9 Months Ended
Sep. 30, 2018
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,

2018

  

December 31,

2017

 
Permit of land use  $410,203   $432,910 
Building   9,525,558    10,052,840 
Plant, machinery and equipment   26,600,697    28,044,515 
Motor vehicle   313,258    330,598 
Office equipment   194,898    200,974 
Total   37,044,614    39,061,837 
Less: accumulated depreciation   (16,987,979)   (15,520,834)
Property, plant and equipment, net  $20,056,635   $23,541,003 

 

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. For the three months ended September 30, 2018 and 2017, depreciation expense was $942,555 and $779,856, respectively. For the nine months ended September 30, 2018 and 2017 depreciation expense was $2,405,396 and $2,314,928.