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Intangible Assets, Net
12 Months Ended
Dec. 31, 2019
Intangible Assets, Net [Abstract]  
Intangible Assets, net
11. Intangible Assets, net

 

Intangible assets as of December 31, 2018 and 2019 consisted of the followings:

 

   December 31,   December 31, 
   2018   2019 
Computer software at cost  $31,025    30,648 
Accumulated amortization   (10,156)   (15,470)
   $20,869    15,178 

 

Amortization expenses were $3,383 and $ 5,482 for the years ended December 31, 2018 and 2019, respectively.