Announcement on Abnormal Stock Trading Fluctuations

Nanjing Wavelength Opto-Electronic Science and Technology Co., Ltd.·July 1, 2026·2 pages

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Nanjing Bochang Optoelectronics Technology Co., Ltd. announces abnormal stock trading fluctuations, with a cumulative price deviation of 31.12% over two trading days. The company has verified that there is no undisclosed material information or significant changes in its operating environment. The board confirms no undisclosed matters requiring disclosure under listing rules.

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Securities Code: 301421

Securities Abbreviation: Bochang Optoelectronics

Announcement No.: 2026-027

Nanjing Bochang Optoelectronics Technology Co., Ltd.

Announcement on Abnormal Stock Trading Fluctuations

The Company and the entire Board of Directors guarantee that the information disclosed is true, accurate, and complete, and contains no false records, misleading statements, or significant omissions.

I. Specifics of Abnormal Stock Trading Fluctuations

Nanjing Bochang Optoelectronics Technology Co., Ltd. (hereinafter referred to as the "Company") experienced abnormal stock trading fluctuations. The closing price increased by a cumulative deviation of 31.12% over two consecutive trading days (June 30, 2026, and July 1, 2026). In accordance with the relevant provisions of the "Trading Rules of the Shenzhen Stock Exchange," this constitutes an abnormal stock trading fluctuation.

II. Company's Attention and Verification

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