Tongtai Announces Election of New Chairman of the Board at 20th Term

1. Date of Board Resolution or Change: 115/06/17 2. Position (Please enter 'Chairman' or 'CEO'): Chairman 3. Former Incumbent's Name: Yen Jui-Hsiung, Representative of Jui-Hsiu Investment Co., Ltd. 4. Former Incumbent's Resume: Chairman of the Company 5. New Appointee's Name: Yen Jui-Hsiung, Representative of Jui-Hsiu Investment Co., Ltd. 6. New Appointee's Resume: Chairman of the Company 7. Nature of Change (Please enter 'Resignation', 'Dismissal', 'End of Term', 'Position Adjustment', 'Redundancy', 'Retirement', 'Deceased', or 'New Appointment'): End of Term 8. Reason for Change: End of Term 9. Effective Date of New Appointment: 115/06/17 10. Other Matters to be Disclosed (If the subject is a publicly issued company or above, this significant 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