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Operating Segment Information (Tables)
 12 Months Ended
Dec. 31, 2023
Disclosure of operating segments [abstract]  
Geographic Non-current Assets Information
     As of December 31,        
     2022            2023        
     NT$            NT$        
     (In Thousands)            (In Thousands)        
Taiwan
    $ 130,812,383        $ 158,066,796    
Singapore
      29,080,766          55,322,448    
China (includes Hong Kong)
      37,213,538          33,424,815    
Japan
      10,736,562          13,415,669    
Others
      20,638          76,508    
  
 
 
       
 
 
    
Total
    $ 207,863,887        $ 260,306,236    
  
 
 
       
 
 
    
Individual Customers Accounting for at least 10% of Operating Revenues
Individual customers accounting for at least 10% of operating revenues for the years ended December 31, 2021, 2022 and 2023 were as follows:
 
     For the years ended December 31,  
     2021      2022      2023  
     NT$      NT$      NT$  
     (In Thousands)      (In Thousands)      (In Thousands)  
Customer A
    $ 21,935,208      $ 24,061,849      $ 16,615,745  
  
 
 
     
 
 
     
 
 
  
Customer B
    $ 14,707,370      $ 22,226,167      $ 29,242,973