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Cash and Cash Equivalents
12 Months Ended
Dec. 31, 2021
Text block [abstract]  
Cash and Cash Equivalents
6.
CASH AND CASH EQUIVALENTS
 
    
December 31
 
    
2020
    
2021
 
    
NT$
    
NT$
    
US$ (Note 4)
 
                      
Cash on hand
   $ 6,073      $ 5,638      $ 203  
Checking accounts and demand deposits
     48,734,866        47,094,687        1,697,718  
Cash equivalents (time deposits with original maturity of less than three months and repurchase agreements collateralized by bonds)
     2,797,132        28,973,020        1,044,449  
    
 
 
    
 
 
    
 
 
 
       
     $ 51,538,071      $ 76,073,345      $ 2,742,370