Stone Chemicals: Receipt of Administrative Supervision Measures Decision Book from Guangdong Securities Regulatory Bureau.

Polychem Corporation announced that on February 3, 2026, the company received an "Administrative Supervision Measures Decision" issued by the Guangdong Securities Regulatory Bureau, pointing out that the company had issues such as inaccurate income accounting, omission of related party transaction disclosures, and non-standard internal control governance. In response to these issues, the company has formulated rectification plans and completed the rectification, and will continue to standardize its implementation. The regulatory measures will not affect the company's normal production and operation, and investors are advised to pay attention to risks.