Taiwan Cement Announces Damage to Its Guigang Plant in Guangxi Due to Typhoon and Heavy Rain

Release Date: July 9, 2026 Statement Date: July 8, 2026 Statement Time: 16:12:18 Company Code: 1101 Company Name: Taiwan Cement Subject: Announcement Regarding Impact on the Company's Guigang Plant in Guangxi Due to Typhoon and Heavy Rain Applicable Clause: Clause 51 Event Date: July 8, 2026

Details: 1. Event Date: July 8, 2026 2. Company Name: Taiwan Cement (Guigang) Cement Co., Ltd. 3. Relationship with Company (please enter 'Company' or 'Subsidiary'): Subsidiary 4. Cross-shareholding Ratio: 100% 5. Cause of Incident: Affected by Typhoon Maysak and its residual circulation, local flooding, river backflow, and reservoir breaches occurred, causing damage to equipment at the company's Guigang plant in Guangxi.

6. Response Measures: a. Due to the ongoing impact of Typhoon Maysak and its residual circulation, flooding, river backflow, and reservoir breaches occurred in multiple areas of Guangxi, affecting the company's Guigang plant in Guangxi. Equipment at the facility was damaged, and operations are expected to be suspended for approximately one month. To ensure uninterrupted supply to customers, the company has activated its contingency mechanism and will temporarily shift production and supply to the Yingde plant in Guangdong, minimizing the impact on overall operations.

b. All personnel at the Guigang plant in Guangxi are safe. The company has activated its internal care and assistance mechanism and will make every effort to support affected employees and the local community in post-disaster recovery and reconstruction.

c. The actual financial and operational impact of this incident is currently under assessment and cannot yet be reasonably estimated. However, the Guigang plant in Guangxi is covered by property insurance, and related losses will be processed through insurance claims. The Guangxi Guigang plant accounts for approximately 2.1% of the company's consolidated revenue in 2025. A special task force has been established and dispatched to the site to conduct inspections and post-disaster recovery work. Any significant developments will be announced in accordance with relevant regulations.

7. Other Matters to be Disclosed (If the subject of the event or resolution is a publicly listed company or above, this major information also qualifies as a matter under Article 7, Paragraph 9 of the Enforcement Rules of the Securities and Exchange Act that significantly affects shareholders' rights or securities prices): None