TA YIH — Proxy Solicitation & Information Statement 2026

May 20, 2026

Meeting Notice
for
Annual Shareholders' Meeting
(Summary Translation)

I. The 2026 Annual Shareholders' Meeting of TA YIH Industrial Co., Ltd. will be convened at 9:00 a.m., Tuesday, June 11, 2026 at 2F Meeting Room of Hotel Chateau Anping (No. 47, Xinjian Rd, South Dist., Tainan City).

The agenda for the Meeting will be as follows :

1. Report Matters :
   (1) 2025 Business Report.
   (2) The 2025 Audit Committee's Review Report.
   (3) Report on 2025 employees' remuneration.
   (4) Distribution of Cash Dividends for 2025.

2. Acknowledged matters :
   (1) Acknowledgment of the 2025 Business Report and Financial Statements.
   (2) Acknowledgment of the 2025 Earnings Distribution.

3. Election matters
   Proposal for re-election of all nine directors (including three independent directors) of the company.

4. Other Motions
   Discussion to approve the lifting of non-compete restrictions for newly-elected directors and their representatives.

5. Extempore Motions

II. Proposal for distribution of 2025 earnings has been resolved by the Board of Directors as follows :
Cash dividends : the proposed dividend is NT$0.75 per share.

III. (I). Number of Directors on the Board: 9 (including 3 independent directors)

(II). List of Director Candidates under the Nomination System:
1. Da Wei Investment Enterprise Co., Ltd. Representative: Wu Chun-I
2. Da Wei Investment Enterprise Co., Ltd. Representative: Kreng Bor-Wen
3. Da Wei Investment Enterprise Co., Ltd. Representative: Wu Jhen-Yi
4. Koito Manufacturing Co., Ltd. Representative: Iwanabe Megumi
5. Koito Manufacturing Co., Ltd. Representative: Yamamoto Kakuya
6. Koito Manufacturing Co., Ltd. Representative: Konagaya Hideharu
Candidates of Independent Directors:
1. Chang Jui-Hui
2. Lo Bin-Hsien
3. Hsien Sung-Wen

(III). For information on each candidate's education and professional experience, please refer to: (https://mops.twse.com.tw)

IV. Pursuant to Article 172 of the Company Act, the Company shall disclose the main content on the Taiwan Stock Exchange Market Observation Post System (https://mops.twse.com.tw).

V. If you plan to attend the Meeting in person, please sign or affix your seal on the "Attendance Card" and bring it to the meeting venue on the meeting day for registration. If attendance is by proxy, please sign or affix your seal on the "Proxy

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Form," fill in the name and address of the proxy, and deliver it to the Company's stock affairs agent, CTBC Bank Co., Ltd., Stock Affairs Department, no later than five days prior to the meeting date. The Attendance Card will then be issued and sent to the authorized proxy for registration at the meeting.

VI. If any proxy solicitation is conducted by shareholders, the Company will compile a summary statement of proxy solicitation and disclose the content on the website of the Securities & Futures Institute on May 11, 2026. Investors may access the "Free Proxy Statement Inquiry System" at https://free.sfi.org.tw and enter the relevant search criteria to obtain such information.

VII. The voting rights for this shareholder's Meeting may be excised electronically from May 12, 2026 to June 8, 2026. Please log in to the Taiwan Depository and Clearing Corporation 's "E-Voting Platform for Shareholders' Meeting" at https://stockservices.tdcc.com.tw and follow the relevant instructions.

VIII. The proxies shall be tallied and verified by the CTBC Bank Co., Ltd., Stock Affairs Department

IX. Please fill out the documents as described in the information contained herein.

Board of Directors

TA YIH Industrial Co., Ltd.