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PROPERTY, PLANT AND EQUIPMENT, NET
12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT, NET
7. PROPERTY, PLANT AND EQUIPMENT, NET
Property, plant and equipment, net consisted of the following:
December 31,
2021
December 31,
2022
Machineries and equipment$150,519 $140,160 
Buildings41,920 44,680 
Leasehold improvements30,035 28,625 
Fixtures and electronic equipment13,848 16,193 
Motor vehicles8,507 10,842 
Total244,829 240,500 
Less: accumulated depreciation(88,745)(100,902)
Construction in progress96,973 195,542 
Property, plant and equipment, net$253,057 $335,140 
The Group recorded depreciation expenses of $16,097, $19,975 and $19,811 for the years ended December 31, 2020, 2021 and 2022, respectively. $567, $2,443 and $1,798 impairment losses were recognized for the years ended December 31, 2020, 2021 and 2022, respectively