CCTC: Invited to Investor Relations Briefing Hosted by Kanghe Securities

Clause Article IV XX Sub-clause: 12. Date of occurrence: 115/05/05 1. Date of investor relations briefing: 115/05/05 2. Time of investor relations briefing: 15:00. 3. Venue of investor relations briefing: No. 176, Section 1, Keelung Road, Xinyi District, Taipei City, B2. 4. Key information from the investor relations briefing: CCTC has been invited to participate in an investor relations briefing hosted by Kanghe Securities to discuss CCTC's Q1 2026 operational results. 5. Other matters to be noted: None. Full financial and business information can be found on the Information Disclosure and Trading System website under the Investor Relations Briefing List or the Briefing Session section.