Dongge Yacht: Announcement on behalf of subsidiary AMI regarding director change

1. Date of change: 115/05/12 (May 12, 2026) 2. Type of personnel appointed or changed (please enter Corporate Director, Corporate Supervisor, Independent Director, Individual Director, or Individual Supervisor): Corporate Director 3. Former personnel's title and name: Huang Yuzhou 4. Brief profile of former personnel: Chief Financial Officer of Dongge Enterprise Co., Ltd. 5. New personnel's title and name: Lin Gufeng 6. Brief profile of new personnel: Chief Financial Officer of Dongge Enterprise Co., Ltd. 7. Circumstances of change (please enter 'Resignation', 'Dismissal', 'End of Term', 'Death', or 'New Appointment'): Resignation 8. Reason for change: Resignation 9. Number of shares held by new appointee at the time of election: 0 10. Original term (e.g., XX/XX/XX ~ XX/XX/XX): 106/07/10~115/05/12 (July 10, 2017 ~ May 12, 2026) 11. Effective date of new appointment: 115/05/12 (May 12, 2026) 12. Proportion of director changes in the same term: 1/3 13. Proportion of independent director changes in the same term: 1/3 14. Proportion of supervisor changes in the same term: 0 15. Whether one-third or more of directors have changed (please enter 'Yes' or 'No'): Yes 16. Other matters to be disclosed (if the subject of the event or resolution is a publicly offered company or higher, this significant information also meets the criteria of Article 7, Item 6 of the Securities Transaction Act Enforcement Rules regarding matters that have a significant impact on shareholder equity or security prices): None