[BES] Announcement of the election of the Chairman by the 28th Board of Directors

1. Date of Board Resolution or occurrence of change: 2026/05/21 2. Personnel category: Chairman 3. Name of predecessor: Not applicable 4. Resume of predecessor: Not applicable 5. Name of successor: Cheng Si-Cong 6. Resume of successor: Chairman of Dahua Construction Co., Ltd., Chairman of Huajian Development Co., Ltd. 7. Reason for change: New appointment 8. Reason for change: Election by the new board of directors 9. Effective date: 2026/05/21 10. Other information: None (No material impact on shareholder equity or stock price)