Formosa Chemicals Clarifies Media Report on Intelligent Gas Combined-Cycle Power Generation Unit Installation

1. Date of Event: 2026/06/29 2. Company Name: Formosa Chemicals and Fibers Corporation 3. Relationship to Company: Parent Company 4. Cross-shareholding Ratio: Not applicable 5. Media Outlet: Economic Daily News 6. Report Content: Coverage on the company's installation of an intelligent gas combined-cycle power generation unit 7. Reason for Disclosure: Clarification of media reports 8. Response Measures: Issuance of a material information announcement 9. Other Matters to Note: The company has long emphasized circular economy and sustainable environmental protection. The investment plan regarding the installation of an intelligent gas combined-cycle power generation unit, as reported by the media, will be executed and publicly announced in accordance with the Asset Acquisition and Disposal Regulations for Publicly Issued Companies and related rules. All official information will be posted on the Public Information Observation Station as the authoritative source. This announcement is issued for clarification purposes.