Guizhou Red Star Development Co., Ltd. Announces Abnormal Fluctuations in Stock Trading

Log in to the Sina Finance APP and search for [Information Disclosure] to see more evaluation levels.

Stock abbreviation: Hongxing Development Stock code: 600367 Announcement No.: Lin 2026-012

Guizhou Hongxing Development Co., Ltd.

Announcement on Abnormal Fluctuations in Stock Trading

The Board of Directors of the Company and all Directors guarantee that the contents of this announcement do not contain any false records, misleading statements, or significant omissions, and bear legal responsibility for the authenticity, accuracy, and completeness of its contents.

Important content reminder:

● The stock trading of Guizhou Hongxing Development Co., Ltd. (hereinafter referred to as the Company) has seen a cumulative increase in the daily closing price deviation exceeding 20% over three consecutive trading days on March 13, March 16, and March 17, 2026. According to the relevant provisions of the “Shanghai Stock Exchange Trading Rules,” this constitutes an abnormal fluctuation in stock trading.

● After self-inspection and verification with the controlling shareholder and actual controller, the Company confirms that as of the date of this announcement, there is no significant information that should be disclosed but has not been disclosed.

● The current static price-to-earnings ratio of the Company is 102.67, and the rolling price-to-earnings ratio is 65.81, which is higher than the static price-to-earnings ratio of 35.14 and the rolling price-to-earnings ratio of 31.77 for the chemical raw materials and chemical products manufacturing industry classified by the China Securities Regulatory Commission. Investors are advised to invest rationally and pay attention to investment risks.

1. Specific circumstances of stock trading (abnormal) fluctuations

The stock trading of the Company has seen a cumulative increase in the daily closing price deviation exceeding 20% over three consecutive trading days on March 13, March 16, and March 17, 2026. According to the relevant provisions of the “Shanghai Stock Exchange Trading Rules,” this constitutes an abnormal fluctuation in stock trading.

2. Relevant situations that the Company has focused on and verified

(1) Production and operation situation

After self-inspection, the Company confirms that there have been no significant changes in its daily operations and external environment.

(2) Significant matters

After self-inspection and sending inquiry letters to the controlling shareholder and actual controller, as of the date of this announcement, the Company, controlling shareholder, and actual controller do not have any significant matters related to the Company that should be disclosed but have not been disclosed, including but not limited to major asset restructuring, share issuance, debt restructuring, business restructuring, asset divestiture, and asset injection.

(3) Media reports, market rumors, and hot concepts

After self-inspection, the Company has not discovered any media reports or market rumors that may have a significant impact on the trading price of the Company’s stock, nor any other significant matters that may greatly affect the Company’s stock price.

(4) Other price-sensitive information

After verification, Hongxing Group and the Qingdao State-owned Assets Supervision and Administration Commission have not increased or decreased their holdings of the Company’s stock within the last six months and during the period of this abnormal stock trading fluctuation. The Company’s directors and senior management have not bought or sold the Company’s stock during the period of abnormal stock trading.

3. Relevant risk reminders

(1) Risks of trading in the secondary market

The stock trading of the Company has seen a cumulative increase in the daily closing price deviation exceeding 20% over three consecutive trading days on March 13, March 16, and March 17, 2026, indicating significant short-term volatility in the Company’s stock price. The current static price-to-earnings ratio of the Company is 102.67, and the rolling price-to-earnings ratio is 65.81, which is higher than the static price-to-earnings ratio of 35.14 and the rolling price-to-earnings ratio of 31.77 for the chemical raw materials and chemical products manufacturing industry classified by the China Securities Regulatory Commission. Investors are advised to invest rationally and pay attention to investment risks.

(2) After verification, the Company does not have any violations of information fair disclosure.

The Company designates the Shanghai Securities Journal as the information disclosure newspaper and the Shanghai Stock Exchange website as the designated information disclosure website:

The Company reminds all investors: please refer to the information disclosed by the Company in the above-designated information disclosure newspaper and website, analyze and invest rationally, and pay attention to investment risks.

4. Board of Directors statement and commitment from related parties

The Board of Directors of the Company confirms that there are no undisclosed matters that should be disclosed according to the “Shanghai Stock Exchange Stock Listing Rules” and other relevant regulations, nor any planning, discussions, intentions, agreements, etc. related to such matters that should be disclosed. The Board has also not been informed of any information that should be disclosed according to the “Shanghai Stock Exchange Stock Listing Rules” and other relevant regulations, which may have a significant impact on the trading prices of the Company’s stock and its derivatives; there are no corrections or supplements to the information previously disclosed by the Company.

This announcement is hereby issued.

Guizhou Hongxing Development Co., Ltd.

Board of Directors

March 18, 2026

● Filing documents

Reply letter to the inquiry from the controlling shareholder regarding the abnormal fluctuations in stock trading of Guizhou Hongxing Development Co., Ltd.

A wealth of information and precise interpretation, all in the Sina Finance APP.