[虹冠電] Announcement regarding the by-election of independent directors

1. Date of change: 2026/05/22 2. Role: Independent Director 3. Previous title and name: Independent Director Zhang Daolin 4. Resume of predecessor: Chairman of Xin Keda Technology Co., Ltd. 5. New title and name: Independent Director Jiao Yuzhou 6. Resume of successor: Independent Director of Elitegroup Computer Systems Co., Ltd. 7. Reason for change: New appointment 8. Reason for change: By-election of independent director 9. Shareholding at time of appointment: 0 shares 10. Original term: 2025/06/05 ~ 2028/06/04 11. Effective date: 2026/05/22 12. Change ratio of directors for the same term: 1/7 13. Change ratio of independent directors for the same term: 1/3 14. Change ratio of supervisors for the same term: Not applicable 15. Whether changes involve more than one-third of directors: No 16. Other notes: None