CHIN HSIN — Proxy Solicitation & Information Statement 2026

Apr 17, 2026

Chin Hsin Environ Engineering Co., Ltd.

Meeting Notice

for

Annual Shareholders' Meeting

(Summary Translation)

The 2026 Annual Shareholders' Meeting (the "Meeting") of Chin Hsin Environ Engineering Company Limited (the "Company") will be convened at 11:30 a.m., Friday, May 22, 2025 at the company's conference room. (Located at No. 58-1, Yanping Rd., Citong Township, Yunlin County 647, Taiwan)

I. The agenda for the Meeting is as follows:

(I) Report Items:

1. The 2025 business report.
2. Audit committee's review of the 2025 year-end report.
3. Report on distribution of 2025 director remuneration.
4. Report on distribution of 2025 employee remuneration.
5. Report on 2025 cash dividend distribution.

(II) Ratifications:

1. Ratification of the 2025 year-end report.
2. Ratification of the 2025 earnings appropriation.

(III) Discussion:

1. Proposal for the Company's Earnings Capitalization and Issuance of New Shares.
2. Discussion of amendments to the Company's "Articles of Incorporation."
3. Amendments to the Company's "Procedures for Acquisition or Disposal of Assets".

(IV) Elections:

1. Election of the 14th term of board of directors (including Independent Directors).

(V) Other Items:

1. Lift the restrictions on the non-compete clause of newly elected directors.

(VI) Motions

II. The board resolution approved the distribution of the 2025 cash dividends at NT$4 per share. In addition, the Board has proposed a stock dividend from retained earnings at a rate of 130.434782 shares for every 1,000 shares held.

III. The shareholders' meeting will conduct the election of 7 seats of directors (including 3 seats of independent directors), which adopts a candidate nomination approach. The list of candidates for directors are: Representative of Sunny Friend Environmental Technology Co., Ltd.: Fang-Chen Chang; Representative of Sunny Friend Environmental Technology Co., Ltd.: Yang-Tien Chang; Representative of Sunny Friend Environmental Technology Co., Ltd.: Mei-Chun Tsai; Sung-Yuan

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Chen; The list of candidates for independent directors are: Tay-Chang Wang, Chin-Shui Hsu, Tsai-Hsing Huang. Investors who wish to access the information on the educational background and work experience of the candidates may visit the official website of the Market Observation Post System (https://mops.twse.com.tw) and enter the Company's stock code in the Material Information.

IV. If the Company decides to hold a meeting under Article 172 of the Company Law, electronic files will be posted to the Market Observation Post System at https://emops.twse.com.tw. Please select “Shareholders’ Meetings” under the “Download Electronic Documents” tab, enter the year, and click “GO” to find the meeting files corresponding to Company code.

V. Pursuant to Article 165 of the Company Act, the Company hereby closes the share transfer registration from March 24, 2026 to May 22, 2026.

VI. Please find enclosed the “Notice of Attendance” and “Proxy Statement.” If you intend to personally attend the meeting, please sign or place your seal in the “Registration Card” column. Shareholders may sign or place their seal in the “Proxy Statement” column to appoint a proxy to attend the meeting on his or her behalf and execute power of attorney in writing. Please fill in the “Proxy Statement” and deliver to the Company’s securities agency, Grand Fortune Securities Co., Ltd. Transfer agent, at least five days prior to the Meeting.

VII. If a proxy is solicited by the shareholder(s), the Company is required to compile details on the proxy solicitation parties and disclose such information on the Securities & Futures Institute (SFI) website (https://free.sfi.org.tw) no later than April 21, 2026. Shareholders can obtain information on the “Free proxy disclosure & related information system.”

VIII. Shareholders may exercise his/her voting rights through electronic votes at the STOKEVOTE platform (https://www.stockvote.com.tw) of Taiwan Depository & Clearing Corporation (TDCC) during the period from April 22, 2026 to May 19, 2026.

IX. The Transfer Agency Department of Grand Fortune Securities Co., Ltd. Is the proxy tallying and verification institution for this Annual meeting.

X. Please be advised and perform accordingly.

Board of Directors

Chin Hsin Environ Engineering Co., Ltd.