Jiantong Announces Change of General Manager

1. Date of Board Resolution or Change: 2026/08/11 (Minguo Year 115) 2. Position (Please enter 'Chairman' or 'General Manager'): General Manager 3. Former Executive's Name: Su Li-Wen 4. Former Executive's Resume: General Manager of Jiantong Precision Industry Co., Ltd. 5. New Executive's Name: Lin Yu-Min 6. New Executive's Resume: Deputy General Manager of Jiantong Precision Industry Co., Ltd. 7. Nature of Change (Please enter 'Resignation', 'Dismissal', 'End of Term', 'Job Reassignment', 'Redundancy', 'Retirement', 'Deceased', or 'New Appointment'): Job Reassignment 8. Reason for Change: Job reassignment to strengthen corporate governance standards and align with the group's strategic development direction 9. Effective Date of New Appointment: 2026/08/11 (Minguo Year 115) 10. Other Matters to be Disclosed (If the subject is a publicly issued company, this major information also meets the criteria under Article 7, Paragraph 6 of the Enforcement Rules of the Securities and Exchange Act regarding matters significantly affecting shareholders' rights or securities prices): None Keywords: Major Information