Cheng Uei: Correction of Partial Information in the Company's 2025 Individual and Consolidated Financial Reports and iXBRL Filing Information

1. Date of occurrence of the event: May 7, 2026 (ROC calendar year 115) 2. Company name: Cheng Uei Precision Industry Co., Ltd. 3. Relationship with the company (please enter 'this company' or 'subsidiary'): This company 4. Mutual shareholding ratio: Not applicable 5. Reason for occurrence: Correction of the Company's 2025 Individual and Consolidated Financial Reports and iXBRL filing information 6. Corrected information item/report name: 1. Regional information on page 126 of the 2025 Consolidated Financial Report 2. Appendix Seven - Information on investee companies' names, locations, etc. (excluding mainland China investee companies) on the 2025 Individual and Consolidated Financial Reports 7. Amount/Content/Page before correction: 1. Regional information on page 126 of the 2025 Consolidated Financial Report 2025 -------------------------- Taiwan $ 38,803,135 Mainland China 10,943,839 USA 22,571,157 Vietnam 1,615,570 India 2,552,605 Hong Kong 4,742,853 Others 13,787,060 -------------------------- Total $ 95,016,219 ================

2. Page 3 of Appendix Seven of the 2025 Individual and Consolidated Financial Reports Investing Company　 Investee Company　 Year-end holding　 Investee Company　 Investment profit/loss Name　　　 Name　 Book Value　 Current period profit/loss 　 recognized in current period ------------ ------------- ----------- ------------- ------------- Ching Shi Tech.　 Ching Shi Hong Kong　　 232,360　 111,623 56,928 Co., Ltd.　 Ltd. Company

3. Page 5 of Appendix Seven of the 2025 Individual and Consolidated Financial Reports Investing Company　 Investee Company　 Year-end holding　 Investee Company　 Investment profit/loss Name　　　 Name　 Book Value　 Current period profit/loss 　 recognized in current period ------------ ------------- ----------- -------------- ------------- APIX 　 Chung Hsuan Ind.　　 100　 658,771 41,875 LIMITED　 Co., Ltd. APIX 　 PERENNIAL 100　 251,419　 12,003 LIMITED　 ACE LIMITED Chung Hsuan Ind.　 Chung Hsuan Ltd.　　 -　 -　 146 Co., Ltd.　 Co. PERENNIAL Ching Shi Hong Kong 　 25　 111,623　 48,992 ACE Ltd. LIMITED 8. Amount/Content/Page after correction: 1. Regional information on page 126 of the 2025 Consolidated Financial Report 2025 -------------------------- Taiwan $ 33,702,627 Mainland China 15,928,041 USA 22,684,508 Vietnam 3,351,527 India 2,645,226 Hong Kong 4,745,809 Others 11,958,481 -------------------------- Total $ 95,016,219 ================

2. Page 3 of Appendix Seven of the 2025 Individual and Consolidated Financial Reports Investing Company　 Investee Company　 Year-end holding　 Investee Company　 Investment profit/loss Name　　　 Name　 Book Value　 Current period profit/loss 　 recognized in current period ------------ ------------- ----------- ------------- ------------- Ching Shi Tech.　 Ching Shi Hong Kong　　 232,360　 48,992 24,986 Co., Ltd.　 Ltd. Company

3. Page 5 of Appendix Seven of the 2025 Individual and Consolidated Financial Reports Investing Company　 Investee Company　 Year-end holding 　 Investee Company 　 Investment profit/loss Name　　　 Name　 Book Value　 Current period profit/loss