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PROPERTY, PLANT AND EQUIPMENT, NET
12 Months Ended
Dec. 31, 2021
PROPERTY, PLANT AND EQUIPMENT, NET.  
PROPERTY, PLANT AND EQUIPMENT, NET

6. PROPERTY, PLANT AND EQUIPMENT, NET

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

December 31, 

    

2020

    

2021

Cost

Buildings and plant

$

444,829

$

468,309

Machinery and equipment

 

880,554

 

910,070

Furniture, fixtures and equipment

 

55,437

 

59,549

Motor vehicles

 

1,123

 

1,176

Less: Accumulated depreciation

 

(381,685)

 

(466,549)

Property, plant and equipment, net

$

1,000,258

$

972,555

Construction in process

 

26,828

 

586,555

Total

$

1,027,086

$

1,559,110

Depreciation expense was $47.4 million, $68.7 million and $77.4 million for the years ended December 31, 2019, 2020 and 2021, respectively.