Publication date: May 29,2025

Notice for the 2025 Annual Shareholders' Meeting

 Advanced Echem Materials Company Limited
Notice for the 2025 Annual Shareholders' Meeting
(This document is prepared in accordance with the Chinese version and is for reference only. In the event of any inconsistency between the English version and the Chinese version, the Chinese version shall prevail.)

I.
Please be informed that the 2025 Annual Shareholders' Meeting of the Company is scheduled on June 18, 2025 (Wednesday) at 10:00 a.m., at No. 428, Kewang Rd., Longtan Dist., Taoyuan City(Conference Room of Aspire Resort) (Shareholder sign-in time: 9:30AM; sign-in location: same place as the meeting).
Key items in agenda:

(I)
Report Items
(1)2024 Business Report
(2)Audit Committee
s Review Report on the 2024 Financial Statements
(3)Report on the Distribution of Employee Compensation and Director Remuneration for 2024
(4)Report on the Distribution of Cash Dividends for 2024
(5)Report on the Amendments to the Company
s Rules of Procedures of Board Meetings
(6)Report on the Amendments to the Company
s Procedures for Ethical Management and Guidelines for Conduct

(II)
Acknowledgements

(1)2024 Business Report and Financial Statements
(2)Table of Earnings Distribution for 2024

(III)
Discussion Items
(1)Amendment to the Company
s Articles of Incorporation
(2)Amendment to the Company
s Operational procedures for Acquisition and Disposal of Assets
(3)Proposal to Release the Prohibition on Directors from Participation in Competitive Business
(IV)Extempore Motions

II.
Contents of cash dividend distribution for the year of 2024 proposed by the Board of Directors: Cash dividend to be distributed to shareholders with earnings at NT$6 per share.

III.
Please find enclosed herewith a sign-in card for participation and proxy form, one set each. If you decide to participate in the meeting in person, please sign or stamp seal on the
sign-in card for participation to report your presence at the venue of the meeting on the date scheduled for the Meeting; If you are appointing a proxy to participate, please submit a signed and filled-in proxy form, which shall include name, ID number, and address of the proxy and send it to the Company's shareholder services agent, i.e., Mega Securities Corp., Shareholder Services Department (1F., No. 95, Sec. 2, Zhongxiao E. Rd., Zhongzheng Dist., Taipei City) no later than five (5) days prior to the date scheduled for the Meeting.

IV.
The Company will produce a compiled list for the information of solicitors
solicitation 30 days before Annual Shareholders' Meeting/ 15 days before EGM for those shareholders wishing to solicit letters of proxy and disclose it on the website of Securities & Futures Institutes at http://free.sfi.org.tw. Investors may directly visit the website, go to the Free inquiry system for proxy letter announcement related information to inquire the details.

V.
Pursuant to Article 172 of the Company Act, Article 26-1 & 43-6 of the Securities and Exchange Act, the key contents of the shareholders
meeting, please refer to Market Observation Post System (MOPS) (website: https://emops.twse.com.tw/, click electronic book/annual report & shareholders meeting related data or click Summaries / Companies information / Web Address to link to the company's website for details.

VI.
Pursuant to Article 13-1 of the Regulations Governing the Use of Proxies for Attendance at Shareholder Meetings of Public Companies, the Company
s compilation and verification of its letters of proxy of the shareholders meeting is conducted by the stock affairs service division of Mega Securities Corp.

VII.
In the present shareholders
meeting, shareholders may vote electronically during the period of: May 17, 2025 to June 15, 2025. Please simply log in at: Taiwan Depository & Clearing Corporation (TDCC) Stockvote Platform and duly vote as instructed. URL: https://stockservices.tdcc.com.tw

VIII.
Souvenirs (7-11 Commodity Card NTD 50), please refer to the fifth booklet for souvenir collection instructions.
Board of Directors,
Advanced Echem Materials Company Limited
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