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Accounts payable (Tables)
12 Months Ended
Dec. 31, 2020
Disclosure Of Detailed Information Of Trade And Other Payable Explanatory [Abstract]  
Summary of Accounts Payable
   
December 31,
2019
   
December 31,
2020
 
   
NT$000
   
NT$000
 
Accounts payable
   419,520    766,805 
Estimated accounts payable
   400,028    200,016 
  
 
 
   
 
 
 
  
 
819,548
 
  
 
966,821