[Ching Cheng Tech] Announcement of Director Changes for Important Subsidiary Lincstech Circuit Singapore Pte. Ltd.

1. Date of change: 2026/04/28 2. Type of personnel selected or changed (please enter legal entity director, legal entity supervisor, independent director, natural person director, or natural person supervisor): Natural person director 3. Title and name of former office holder: Chairman Yang Qi-jun / Director Tao Zheng-guo 4. Brief resume of former office holder: Director of Lincstech Circuit Singapore Pte. Ltd. 5. Title and name of new office holder: Chairman Tao Zheng-guo / Director Tan Ngee Kiah 6. Brief resume of new office holder: General Manager of the company / Division Head of Lincstech Circuit Singapore Pte. Ltd. 7. Type of change (please enter 'resignation', 'removal', 'term expiration', 'death' or 'new appointment'): New appointment 8. Reason for change: New appointment 9. Number of shares held by new appointee upon selection: 0 10. Original term (e.g., xx/xx/xx ~ xx/xx/xx): Not applicable 11. Effective date of new appointment: 2026/04/28 12. Ratio of director changes in the same term: 1/5 13. Ratio of independent director changes in the same term: Not applicable 14. Ratio of supervisor changes in the same term: Not applicable 15. Whether more than one-third of directors have changed (please enter yes or no): No 16. Other matters to be specified (if the subject of the event or resolution is a public offering company or above, this material information also complies with Article 7, Paragraph 6 of the Enforcement Rules of the Securities Exchange Act regarding matters that have a material impact on shareholder equity or security prices): None