EX-8.1 3 d846836dex81.htm EX-8.1

Exhibit 8.1

List of Significant Subsidiaries of United Microelectronics Corporation

Company |  | Jurisdiction of Incorporation |  | Percentage of Ownership as of December 31, 2024 |
UMC Group (USA) |  | U.S.A. |  |  | 100.00 | %
United Microelectronics (Europe) B.V. |  | The Netherlands |  |  | 100.00 | %
UMC Capital Corp. |  | Cayman Islands |  |  | 100.00 | %
TLC Capital Co., Ltd. |  | Taiwan, R.O.C. |  |  | 100.00 | %
Green Earth Limited |  | Samoa |  |  | 100.00 | %
Fortune Venture Capital Corp. |  | Taiwan, R.O.C. |  |  | 100.00 | %
UMC Investment (Samoa) Limited |  | Samoa |  |  | 100.00 | %
ECP Vita Pte. Ltd. |  | Singapore |  |  | 100.00 | %
Soaring Capital Corp. |  | Samoa |  |  | 100.00 | %
Unitruth Advisor (Shanghai) Co., Ltd. |  | China |  |  | 100.00 | %
Tera Energy Development Co., Ltd. |  | Taiwan, R.O.C. |  |  | 94.93 | %
United Microchip Corporation |  | Cayman Islands |  |  | 100.00 | %
Wavetek Microelectronics Corporation |  | Taiwan, R.O.C. |  |  | 79.54 | %
Everrich Energy Investment (HK) Limited |  | China |  |  | 94.93 | %
Everrich (Jining) New Energy Technology Co., Ltd. (formerly Everrich (Shandong) Energy Co., Ltd.) |  | China |  |  | 94.93 | %
Wavetek Microelectronics Corporation (USA) |  | U.S.A. |  |  | 79.54 | %
Best Elite International Limited |  | British Virgin Islands |  |  | 100.00 | %
Infoshine Technology Limited |  | British Virgin Islands |  |  | 100.00 | %
Oakwood Associates Limited |  | British Virgin Islands |  |  | 100.00 | %
Hejian Technology (Suzhou) Co., Ltd. |  | China |  |  | 99.9985 | %
United Semiconductor (Xiamen) Co., Ltd. |  | China |  |  | 99.9994 | %
UMC Korea Co., Ltd. |  | Korea |  |  | 100.00 | %
Omni Global Limited |  | Samoa |  |  | 100.00 | %
United Microtechnology Corporation (California) |  | U.S.A. |  |  | 100.00 | %
Sino Paragon Limited |  | Samoa |  |  | 100.00 | %
United Semiconductor Japan Co., Ltd. |  | Japan |  |  | 100.00 | %