[HDRE] Announcement of Chairman Election for Important Subsidiary C-De Energy

1. Date of the board of directors resolution or date of occurrence of the change: June 17, 2026 (115/06/17) 2. Type of personnel (enter chairman or general manager): Chairman 3. Name of the previous position holder: Hsieh Yuan-I 4. Resume of the previous position holder: Chairman of HDRE Technology Co., Ltd. 5. Name of the new position holder: Hsieh Yuan-I 6. Resume of the new position holder: Chairman of HDRE Technology Co., Ltd. 7. Circumstances of change (enter "resignation", "dismissal", "term expiration", "position adjustment", "layoff", "retirement", "death", or "new appointment"): Term expiration 8. Reason for change: Re-election upon term expiration 9. Effective date of the new appointment: June 17, 2026 (115/06/17) 10. Other matters that need to be specified (if the subject of the event or resolution is a public company or above, whether this material information also meets the matters that have a material impact on shareholders' equity or securities prices as stipulated in Subparagraph 6, Paragraph 7 of the Enforcement Rules of the Securities and Exchange Act): None