Rongxing Announces Material Financial Information Due to Trading Alert Threshold on Centralized Market

1. Factual Date: July 2, 2026 (ROC Year 115) 2. Reason for Announcement: In accordance with instructions from the Taiwan Stock Exchange Corporation. 3. Financial and Business Information: Period (Monthly) (Quarterly) (Last Four Quarters Cumulative) Most Recent Month YoY Change% Most Recent Quarter YoY Change% (Q2 2025 - Q1 2026) Item (May 2026) (Q1 2026) (IFRS Consolidated Reviewed Figures) (IFRS Consolidated Self-compiled Figures) (IFRS Consolidated Reviewed Figures) ------------------------------------------------------------------------------------------------------------------------ Operating Revenue (Million) 345 38% 911 18.31% 3,504 Pre-tax Net Profit (Million) 2 105.41% 16 17,677.78% 251 Net Profit Attributable to Owners of Parent (Million) 0.6 100.85% 14 170.00% 149 Earnings Per Share (NT$) 0 100.87% 0.08 166.67% 0.88 4. Whether there are material events under Article 4 of the 'TSEC Procedures for Verification and Disclosure of Material Information by Listed Companies': No 5. Whether there is a material information press conference under Article 11 of the above procedures: No 6. Complete financial information is available on the Public Information Observation Station. Access paths: (1) Recent operating revenue and profit/loss: Basic Information > Summary Version (2) Historical monthly operating revenue: Business Overview > Monthly Revenue > Monthly Operating Revenue Information (Post-IFRS) (3) Historical profit/loss (audited/reviewed figures): Financial Statements > Post-IFRS > Consolidated/Individual Statements > Consolidated Statement of Comprehensive Income (4) Historical profit/loss (voluntary self-compiled announcements): Business Overview > Self-compiled Profit/Loss Announcements 7. Other Notes: The year-on-year decline in profitability is primarily due to decreased revenue.