Chien Hsing Announces Material Financial Information Due to Securities Trading Alert Threshold on Exchange

1. Date of Event: June 10, 2026 2. Reason for Announcement: In accordance with notification from the Taiwan Stock Exchange Corporation 3. Financial and Business Information: The following are the company's key financial figures: ------------------------------------------------------------- Monthly (May 2026) YoY % Quarterly (Q1 2026) YoY % Item (Preliminary) Change (Reviewed) Change ------------------------------------------------------------- Revenue 238 million TWD +561.11% 379 million TWD +96.37% Pre-tax Profit (Loss) 8 million TWD +150.00% 81 million TWD +268.18% Net Profit (Loss) 8 million TWD +150.00% 81 million TWD +268.18% Earnings Per Share (TWD) 0.05 +155.56% 0.47 +268.14% ------------------------------------------------------------- Last Four Quarters (Q2 2025 – Q1 2026) Item (Audited/Reviewed) ------------------------------------------------------------- Revenue 1,005 million TWD Pre-tax Profit (Loss) 41 million TWD Net Profit (Loss) 28 million TWD Earnings Per Share 0.16 TWD 4. Whether any material information under Article 4 of the TWSE's 'Procedures for Verification and Disclosure of Material Information by Listed Companies' applies: No 5. Whether a press briefing under Article 11 of the above procedures is required: No 6. Complete financial data is available on the Public Information Observation Station via the following paths: (1) Recent revenue and profit: Basic Information > Highlights (2) Historical monthly revenue: Operations > Monthly Revenue > Monthly Revenue under IFRS (3) Historical profit/loss (audited/reviewed): Financial Statements > Under IFRS > Consolidated/Individual > Comprehensive Income Statement (4) Historical profit/loss (voluntary preliminary announcements): Operations > Preliminary Earnings Announcements 7. Other Disclosures: None