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Property, Plant and Equipment
 3 Months Ended
Mar. 31, 2019
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT

NOTE 3 – PROPERTY, PLANT AND EQUIPMENT

 

Property, plant and equipment consisted of the following:

  

   March 31,   December 31, 
   2019   2018 
Permit of land use  $419,703   $409,612 
Building   9,746,159    9,511,832 
Plant, machinery and equipment   27,305,129    26,576,409 
Motor vehicle   320,513    312,807 
Office equipment   203,428    198,292 
Total   37,994,932    37,008,952 
Less: accumulated depreciation   (18,927,900)   (17,714,573)
Property, Plant and Equipment, net  $19,067,032   $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. For the three months ended March 31, 2019 and 2018, depreciation expense was $772,861 and $827,949, respectively.