Company

Jurisdiction of

Incorporation

Percentage of

Ownership as of

December 31,

2020

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.

100.00%

United Microchip Corporation

Cayman Islands

100.00%

Wavetek Microelectronics Corporation

Taiwan, R.O.C.

81.40%

Everrich Energy Investment (HK) Limited

China

100.00%

Everrich (Shandong) Energy Co., Ltd.

China

100.00%

Wavetek Microelectronics Investment (Samoa) Limited

Samoa

81.40%

Wavetek Microelectronics Corporation (USA)

U.S.A.

81.40%

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%

UnitedDS Semiconductor (Shandong) Co., Ltd.

China

99.9985%

United Semiconductor (Xiamen) Co., Ltd.

China

67.76%

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%

UMC Technology Japan Co., Ltd.

Japan

100.00%

United Semiconductor Japan Co., Ltd.

Japan

100.00%