[Chien Hsin International] Information Regarding Participation in Corporate Briefing Session

Complies with Clause 4, Article XX: 12 Date of Fact Occurrence: 2026/04/16 1. Date of Corporate Briefing Session: 2026/04/16 2. Time of Corporate Briefing Session: 15:30 3. Location of Corporate Briefing Session: CTBC Financial Park Conference Center (1F-3F, No. 1, Section 3, Zhongxiao East Road, Daan District, Taipei City) 4. Key Information from Corporate Briefing Session: Announcement of company's invitation to participate in KGI Securities and IR Trust's '2026 New Highs · New Thinking Investment Forum'. 5. Other matters to be noted: None. Full financial and business information can be found on the Public Information Observatory website under the Corporate Briefing Session list or forum section.