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Property, Plant and Equipment, Net
12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment, Net [Abstract]  
PROPERTY, PLANT AND EQUIPMENT, NET

5. PROPERTY, PLANT AND EQUIPMENT, NET

 

As of December 31, 2021 and 2022, property, plant and equipment consisted of the following:

 

  

December 31,

2021

  

December 31,

2022

 
Electronic equipment  $910   $864 
Office equipment and furniture   78    66 
Leasehold improvement   85    186 
    1,073    1,116 
Less: accumulated depreciation   (831)   (956)
   $242   $160 

 

For the years ended December 31, 2020, 2021 and 2022, depreciation expense amounted to $156, $82 and $90 respectively.