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PROPERTY, PLANT AND EQUIPMENT, NET
12 Months Ended
Dec. 31, 2019
PROPERTY, PLANT AND EQUIPMENT, NET  
PROPERTY, PLANT AND EQUIPMENT, NET

7. PROPERTY, PLANT AND EQUIPMENT, NET

Property, plant and equipment, net, consist of the following:

 

 

 

 

 

 

 

 

 

December 31, 

 

    

2018

    

2019

Cost

 

 

 

 

 

 

Buildings and plant

 

$

330,500,911

 

$

400,843,258

Machinery and equipment

 

 

335,808,916

 

 

821,582,040

Furniture, fixtures and equipment

 

 

25,953,939

 

 

44,550,155

Motor vehicles

 

 

582,375

 

 

905,217

Less: Accumulated depreciation

 

 

(133,334,881)

 

 

(288,194,536)

Property, plant and equipment, net

 

$

559,511,260

 

$

979,686,134

Construction in process

 

 

57,463,560

 

 

15,341,080

Total

 

$

616,974,820

 

$

995,027,214

 

Due to the change of management's plan as described in Note 3, machinery and equipment of $43.1 million as well as plant of  $5.1 million are reclassified from assets held for sale to property, plant and equipment as of December 31, 2019.

Depreciation expense was $27,801,924,  $27,718,260 and $47,371,130 for the years ended December 31, 2017, 2018 and 2019, respectively.