[Primax] Announcement regarding the change of supervisor at subsidiary Huizhou Tymphany Acoustic Technology

1. Date of change: 2026/06/01. 2. Category of personnel: Corporate Supervisor. 3. Name of predecessor: Liu Xiaohan (Employee Representative). 4. Resume of predecessor: HR & Admin Director at Huizhou Tymphany. 5. Name of successor: Ying Zongwen (Shareholder Representative). 6. Resume of successor: Admin General Manager at Huizhou Tymphany. 7. Nature of change: Resignation. 8. Reason for change: Resignation. 9. Shareholding of successor: N/A. 10. Original term: 2025/01/14 ~ 2028/01/13. 11. Effective date: 2026/06/01. 12. Change ratio of directors: N/A. 13. Change ratio of independent directors: N/A. 14. Change ratio of supervisors: 100%. 15. Change of more than 1/3 of directors: No. 16. Other notes: None.