DingZing — AGM Information 2026

Apr 20, 2026

Dingzing Advanced Materials Incorporated

Notice of 2026 Annual Shareholder Meeting

I. The Company has scheduled the 2026 Annual Shareholder Meeting to be held on Wednesday, May 27, 2026, at 3:00 p.m. in the auditorium on the third floor of the Kaohsiung Linhai Industrial Park Service Center (address: No. 37, Daye N. Rd., Xiaogang District, Kaohsiung City). Shareholder check-in will begin at 2:30 p.m. at the meeting venue. The main content of the meeting is as follows:

i. Matters to report: 1. 2025 Annual Business Report; 2. 2025 Audit Committee Review Report; 3. Report on 2025 Distribution of Director Remuneration; 4. Report on 2025 Distribution of Employee Remuneration; 5. Report on Dividend and Bonus Cash Allocation from 2025 Surplus; 6. 2023 Report on issuance of domestic 1st secured convertible bonds and domestic 2nd unsecured convertible bonds; 7. Report on amendment of the Code of Ethical Conduct; 8. Report on amendment of the Sustainable Development Best Practice Principles; 9. Explanation on handling of shareholder proposals

ii. Proposals: 1. 2025 Annual Business Report and financial reports; 2. Motion for 2025 surplus allocation

iii. Matters for Discussion: 1. Amendment of the Articles of Incorporation; 2. Amendment of the Rules and Procedures of Shareholders' Meetings

iv. Extemporaneous motions

II. Regarding the distribution of the Company's cash dividends for FY2025, the Board of Directors has resolved to distribute a cash dividend of NT$4.5 per share, for a total of NT$324,601,142.

III. If any matters stipulated in Article 172 of the Company Act are covered in this Annual Shareholder Meeting, their main content can be viewed on the Market Observation Post System (URL: https://mops.twse.com.tw) under "Individual Company > Electronic Document Download > Annual Report and Shareholders Meeting Information" by entering the company code and inquiry year.

IV. In accordance with the provisions of Article 165 of the Company Act, the registration of stock transfer will be suspended from March 29, 2026, until May 27, 2026.

V. In addition to the public announcement of this Annual Shareholder Meeting, we have also sent this notice along with one copy each of the Attendance Signature Card and Proxy Authorization Form. We cordially invite you to review these documents and hope you will attend the meeting. If you intend to attend this meeting in person, please sign or affix your seal on the third duplicate copy of the Attendance Signature Card and bring it to the meeting venue on the day of the meeting for attendance registration; there is no need to submit the card by mail. If you intend to attend this meeting by proxy, please carefully fill in the information related to the appointed proxy on the third duplicate copy of the Proxy Authorization Form and sign or affix your seal on it, then mail (deliver) it to the Company's stock affairs agency—Stock Affairs Agency Department of First Securities Inc.—no later than 5 days prior to the meeting. The aforementioned Stock Affairs Agency Department will then prepare an Attendance Card to be mailed to your appointed proxy for retention. The appointed proxy must present the aforementioned Attendance Card to attend the Annual Shareholder Meeting. (Shareholders and appointed proxies must present valid identification on the day of the Annual Shareholder Meeting.)

VI. If there is any proxy solicitation by shareholders, the Company will prepare a summary of proxy solicitation information and disclose it on the website of the Securities and Futures Institute prior to April 24, 2026. For inquiries, shareholders may visit the URL: https://free.sfi.org.tw and click "Free Proxy Inquiry System", then enter the securities code: 6585.

VII. At this Annual Shareholder Meeting, voting rights may be exercised by electronic means. The rights exercise period is from April 27, 2026, until May 24, 2026. Please log in to Taiwan Depository and Clearing Corporation's Shareholder e-Service Platform (URL: https://stockservices.tdcc.com.tw), click "eVoting", and follow the instructions to cast your vote.

VIII. The Stock Affairs Agency Department of First Securities Inc. is the proxy tallying and verification institution for this Annual Shareholder Meeting.

Submitted to

All shareholders

Sincerely,

Dingzing Advanced Materials Incorporated Board of Directors