[Rongcheng] Announcement of Unaudited Consolidated Profit and Loss for July 2026 and Cumulative January-July Period

1. Date of Event: August 5, 2026 2. Company Name: Rongcheng Paper Co., Ltd. 3. Relationship to Company:本公司 (This Company) 4. Cross-shareholding Ratio: Not applicable 5. Media Name: Not applicable 6. Report Content: Not applicable 7. Reason for Disclosure: Announcement of unaudited consolidated profit and loss for July 2026 and cumulative January-July period

Unit: New Taiwan Dollar / Thousand; EPS: New Taiwan Dollar / Share (Unaudited)

July Jan-Jul ------------------------------------------------------------ Consolidated Operating Income: 123,548 349,543 Consolidated Pre-tax Income: 134,851 478,098 Net Pre-tax Profit Attributable to Owners of Parent: 130,096 428,767 Consolidated Pre-tax EPS: 0.10 0.33

8. Response Measures: None. 9. Other Matters to be Disclosed: The company uses a weighted average number of outstanding shares of 1.299 billion as the basis for calculating pre-tax EPS.