Seashell New Materials: The stock has a cumulative deviation of more than 20% for two consecutive days, and there are no undisclosed matters.

Haiko New Materials announced that the company's stock had a cumulative deviation of more than 20% in the closing price on two consecutive trading days on November 11 and 12, 2025, indicating abnormal fluctuations. After verification, it was found that there was no need to correct or supplement the disclosed information, no undisclosed significant information that may affect the stock price in public media reports, no significant changes in the recent operations and internal and external environment, and no undisclosed significant matters for the company, controlling shareholders, and actual controllers. During the abnormal period, the controlling shareholders and actual controllers did not buy or sell the company's stock. The company reminds investors to rely on designated media information for investment and to invest rationally.