1617 Rongxing

Announcement Date: 1150708 Statement Date: 1150707 Statement Time: 160934 Company Code: 1617 Company Name: Rongxing Subject: Establishment of Cash Dividend Record Date Compliance Clause: Clause 14 Event Date: 1150707 Details: 1. Date of Board, Shareholders' Meeting Resolution or Company Decision: 115/07/07 2. Type of Ex-Rights/Ex-Dividend (please enter "Ex-Rights", "Ex-Dividend", or "Ex-Rights and Ex-Dividend"): Ex-Dividend 3. Type and Amount of Common Stock Dividend: Cash dividend of TWD 0.6 per share, totaling TWD 101,708,820 4. Ex-Dividend Trading Date: 115/07/24 5. Last Transfer Date: 115/07/27 6. Start Date of Transfer Suspension: 115/07/28 7. End Date of Transfer Suspension: 115/08/01 8. Ex-Dividend Record Date: 115/08/01 9. Final Date for Bond Conversion Application: N/A 10. Start Date of Bond Conversion Suspension: N/A 11. End Date of Bond Conversion Suspension: N/A 12. Cash Dividend Payment Date for Common Stock: 115/08/26 13. Is the cash dividend paid in foreign currency (partially or fully)? (please enter "Yes" or "No"): No 14. Currency for Foreign Cash Dividend: Not applicable 15. Recipients of Foreign Cash Dividend: Not applicable 16. Exchange Rate Determination Method for Foreign Cash Dividend: Not applicable 17. Other Matters to be Clarified: 1. Cash dividend payment date: 115/08/26 2. The cash dividend will be distributed on August 26, 115 (2026) through CTBC Bank, the company's share transfer agent, via bank transfer or registered check. Processing fees will be borne by shareholders. 3. Shareholders who hold company shares but have not completed transfer procedures must visit CTBC Bank's agency office (Address: 5F, No. 83, Sec. 1, Chongqing S. Rd., Zhongzheng Dist., Taipei City) in person before 5:00 PM on July 27, 115 (2026), or by registered mail with a postmark date no later than July 27, 115 (the last transfer date). For shareholders participating in centralized transfer procedures through the Taiwan Depository & Clearing Corporation, the company's share agent will process the transfer based on submitted data.