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Other operating income (expenses), net
12 Months Ended
Dec. 31, 2019
Text block [abstract]  
Other operating income (expenses), net
6.
Other operating income (expenses), net
 
   
2017
   
2018
   
2019
 
   
NT$000
   
NT$000
   
NT$000
 
Gain on disposal of property, plant and equipment, net
   132,777    14,274    20,271 
Impairment loss on property, plant and equipment
   (956   —      (9,938
Gain on disposal of scrapped materials
   27,940    59,380    43,652 
Gain on disposal of items purchased on behalf of others
   26,417    31,268    15,080 
Royalty income
   11,998    43,224    12,336 
Insurance compensation income
   486,858    147    10,435 
Others
   7,800    (779   1,092 
  
 
 
   
 
 
   
 
 
 
  
 
692,834
 
  
 
147,514
 
  
 
92,928