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Investments Accounted for Using Equity Method (Tables) | 12 Months Ended
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Dec. 31, 2022
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Summary of Investments in Associates | Associates consisted of the following:
|  |  |  | Place of Incorporation and Operation |  | Carrying Amount |  |  | % of Ownership and Voting Rights Held by the Company
Name of Associate |  | Principal Activities |  | December 31, 2021 |  |  | December 31, 2022 |  |  | December 31, 2021 |  | December 31, 2022
|  |  |  |  |  | NT$ |  |  | NT$ |  |  |  |  |
|  |  |  |  |  | (In Millions) |  |  | (In Millions) |  |  |  |  |
Vanguard International Semiconductor Corporation (VIS) |  | Manufacturing, sales, packaging, testing and computer-aided design of integrated circuits and other semiconductor devices and the manufacturing and design service of masks |  | Hsinchu, Taiwan |  | $ | 10,469.2 |  |  | $ | 13,268.2 |  |  | 28% |  | 28%
Systems on Silicon Manufacturing Company Pte Ltd. (SSMC) |  | Manufacturing and sales of integrated circuits and other semiconductor devices |  | Singapore |  |  | 6,795.7 |  |  |  | 8,934.7 |  |  | 39% |  | 39%
Xintec Inc. (Xintec) |  | Wafer level chip size packaging and wafer level post passivation interconnection service |  | Taoyuan, Taiwan |  |  | 3,012.3 |  |  |  | 3,491.7 |  |  | 41% |  | 41%
Global Unichip Corporation (GUC) |  | Researching, developing, manufacturing, testing and marketing of integrated circuits |  | Hsinchu, Taiwan |  |  | 1,462.1 |  |  |  | 1,608.1 |  |  | 35% |  | 35%
Mutual-Pak Technology Co., Ltd. (Mutual-Pak) |  | Manufacturing of electronic parts, wholesaling and retailing of electronic materials, and researching, developing and testing of RFID |  | New Taipei, Taiwan |  |  | 22.9 |  |  |  | 19.0 |  |  | 28% |  | 28%
|  |  |  |  |  | $ | 21,762.2 |  |  | $ | 27,321.7 |  |  |  |  |
Summary of Market Prices of Investments Accounted for Using Equity Method in Publicly Traded Stocks Calculated by Closing Price at End of Reporting Period |
|  |  |  | December 31, 2021 |  |  | December 31, 2022 |
|  |  |  | NT$ |  |  | NT$ |
Name of Associate |  |  |  | (In Millions) |  |  | (In Millions) |
VIS |  |  |  | $ | 73,347.3 |  |  | $ | 35,977.3 |
GUC |  |  |  | $ | 27,359.1 |  |  | $ | 29,926.9 |
Xintec |  |  |  | $ | 15,913.3 |  |  | $ | 10,716.4 |

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