Dahua (9905) Holds Online Investor Briefing

Announcement Date: 2026/05/20 Statement Date: 2026/05/19 Statement Time: 16:00:10 Company Code: 9905 Company Name: Dahua Subject: Announcement of the company's online investor briefing

1. Date of investor briefing: 2026/05/20 2. Time of investor briefing: 14:00 3. Location of investor briefing: This Chinese-language investor briefing was conducted via web broadcast. 4. Summary of investor briefing: Explanation of the company's current business operations and future outlook. 5. Other remarks: Full financial and business information can be viewed on the Market Observation Post System under the investor briefing list or project section.