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Investments Accounted for Using Equity Method
12 Months Ended
Dec. 31, 2019
TextBlock [abstract]  
Investments Accounted for Using Equity Method
14.
INVESTMENTS ACCOUNTED FOR USING EQUITY METHOD
Associates consisted of the following:
 
     
Place of
  
Carrying Amount
   
% of Ownership and Voting Rights
Held by the Company
Name of Associate
  
Principal Activities
 
Incorporation and
Operation
  
December 31,
2018
   
December 31,
2019
   
December 31,
2018
 
December 31,
2019
        
NT$
   
NT$
      
        
(In Millions)
   
(In Millions)
      
Vanguard International Semiconductor Corporation (VIS)
  
Manufacturing, selling, packaging, testing and computer-aided design of integrated circuits and other semiconductor devices and the manufacturing and design service of masks
 Hsinchu, Taiwan  $8,924.8   $8,960.5   28% 28%
Systems on Silicon Manufacturing Company Pte Ltd. (SSMC)
  
Manufacturing and selling of integrated circuits and other semiconductor devices
 Singapore   5,772.8    6,502.2   39% 39%
Xintec Inc. (Xintec)
  
Wafer level chip size packaging and wafer level post passivation interconnection service
 Taoyuan, Taiwan   1,764.6    1,842.8   41% 41%
Global Unichip Corporation (GUC)
  
Researching, developing, manufacturing, testing and marketing of integrated circuits
 Hsinchu, Taiwan   1,283.9    1,274.8   35% 35%
Mutual-Pak
  
Manufacturing of electronic parts, wholesaling and retailing of electronic materials, and researching, developing and testing of RFID
 New Taipei, Taiwan   22.9    38.5   39% 28%
     
 
 
   
 
 
    
     $17,769.0   $18,618.8    
     
 
 
   
 
 
    
As of December 31, 2018 and 2019, no investments in associates are individually material to the Company. Please refer to the consolidated statements of profit or loss and other comprehensive income for recognition of share of both profit (loss) and other comprehensive income (loss) of associates that are not individually material.
The market prices of the investments accounted for using the equity method in publicly traded stocks calculated by the closing price at the end of the reporting period are summarized as follows. The closing price represents the quoted price in active markets, the level 1 fair value measurement.
 
   
December 31,
2018
   
December 31,

2019
 
   
NT$
   
NT$
 
Name of Associate
  
(In Millions)
   
(In Millions)
 
VIS
  $27,621.3   $36,812.9 
  
 
 
   
 
 
 
GUC
  $9,617.7   $11,251.8 
  
 
 
   
 
 
 
Xintec
  $3,783.6   $8,958.2