[Temporary Announcement] ST Zhongyu: Announcement on the postponement of the second temporary shareholders’ meeting in 2026

Announcement number: 2026-006

Securities code: 838796 Securities abbreviation: ST Zhongyu Sponsoring broker: Industrial Securities

Beijing Zhongsheng Jinyu Diagnostic Technology Co., Ltd.

Announcement on the postponement of the second extraordinary shareholders' meeting in 2026

The company and all members of the board of directors guarantee that the contents of the announcement are true, accurate and complete, and that there are no false records, misleading statements or major omissions, and bear individual and joint legal liability for the authenticity, accuracy and completeness of the contents.

1. Basic information on the convening of the original shareholders’ meeting

1. Type and session of the original shareholders’ meeting: the second extraordinary shareholders’ meeting in 2026.

2. Original shareholders’ meeting equity registration date: March 20, 2026

3. The original shareholders’ meeting time is: 9:00 on March 25, 2026.

2. Reasons for postponing the shareholders’ meeting

The company disclosed the "Notice on Convening the Second Extraordinary Shareholders' Meeting in 2026" (Announcement No.: 2026-005) on March 10, 2026, and plans to hold the second extraordinary shareholders' meeting in 2026 on March 25, 2026. Due to the company's actual work arrangements, it is planned to postpone the original date to March 30, 2026, and the matters to be reviewed at the meeting remain unchanged. The postponement of this shareholders' meeting complies with relevant laws, regulations and the Articles of Association.

3. Basic situation of the shareholders’ meeting after postponement

1. Equity registration date for the postponed shareholders’ meeting: March 20, 2026

2. The postponed shareholders’ meeting will be held at 9:00 on March 30, 2026.

For other relevant matters, please refer to the company’s announcement disclosed on March 10, 2026, announcement number: 2026-005.

4. Others

Except for the above, matters such as the method of convening the meeting, the attendees, the location of the meeting, the matters to be considered at the meeting, the method and location of registration for the meeting, etc. will remain unchanged.

Board of Directors of Beijing Zhongsheng Jinyu Diagnostic Technology Co., Ltd.

March 16, 2026