China Petrochemical Development Corp. Announces Investor Relations Conference

1. Date of Investor Relations Conference: 115/04/17 2. Time of Investor Relations Conference: 16:00 3. Location of Investor Relations Conference: Taiwan Stock Exchange 1st Floor Information Display Center (No. 7, Section 5, Xinyi Road, Xinyi District, Taipei City 110615) 4. Key Information for Investor Relations Conference: Explanation of the company's 2025 financial and operational overview, and 2026 outlook. 5. Other Matters to be Notified: Complete financial and business information can be viewed on the Public Information Observation Station under the Investor Relations Conference List or Conference Items.