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To announce the change of financial officer, accounting officer, corporate governance officer and acting spokesperson date : 2026/09/24

SEQ_NO
1
Date of announcement
2026/09/24
Time of announcement
14:39:29
Spokesman:
Chen,Ying-Chi
Title of Spokesman:
Vice President of Sales Division
Subject
To announce the change of financial officer, accounting officer,
corporate governance officer and acting spokesperson
To which item it meets
Paragraph 8
Date of events
2026/09/24
Statement
1.Type of personnel changed (please enter: spokesperson, acting
spokesperson, important personnel (CEO, COO, CMO, CSO, etc.)
,financial officer, accounting officer, corporate governance officer,
chief information security officer, research and development officer,
chief internal auditor, or designated and non-designated representatives):
financial officer,accounting officer,corporate governance officer and
acting spokesperson
2.Date of occurrence of the change: 2026/09/24
3.Name, title, and resume of the previous position holder:
Wang, Kuan-Chieh / Finance Manager,Chunghwa Chemical Synthesis &
Biotech Co., Ltd.
4.Name, title, and resume of the new position holder:
Chang, Chih-Wei / Finance Manager,Taiwan Advanced Nanotech Inc./
financial officer, accounting officer, and acting spokesperson
5.Type of the change (please enter: "resignation", "position
adjustment", "retirement", "death","new
replacement" or "dismissal"): new replacement
6.Reason for the change: new replacement
7.Effective date: 2026/09/24
8.Any other matters that need to be specified:
The appointments of the new financial officer, accounting officer,
corporate governance officer and acting spokesperson was approved
by the Company's Board of Directors on 2026/09/24.