[Southeast Cement] Southeast Cement Corporation Board of Directors' Resolution to Amend Matters Related to the 2026 Annual General Meeting of Shareholders (Updated Discussion Items)

1. Date of Board of Directors' resolution: 2026/05/07 2. Date of shareholder meeting: 2026/06/18 3. Location of shareholder meeting: B1, No. 21, Wufu 3rd Road, Qianjin District, Kaohsiung City 4. Method of shareholder meeting (physical shareholder meeting/video-assisted shareholder meeting/video shareholder meeting): Physical shareholder meeting 5. Convening matter one: Report items (1) 2025 Business report. (2) Audit Committee's review report on 2025 financial statements. (3) Report on the distribution of employee (including grassroots employees) and director remuneration for 2025. (4) Report on the payment of director remuneration for 2025. (5) Other report items. 6. Convening matter two: Approval items (1) Proposal to approve 2025 financial statements. (2) Proposal to approve 2025 earnings distribution. 7. Convening matter three: Discussion items (1) Proposal to amend certain provisions of the "Procedures for Acquisition or Disposal of Assets." (2) Proposal to amend certain provisions of the "Rules of Procedure for Shareholder Meetings." 8. Convening matter four: Election items (1) Proposal for the re-election of all directors. 9. Convening matter five: Other matters (1) Proposal to lift non-compete restrictions for newly elected directors. 10. Interim motions: None 11. Start date of book closure: 2026/04/20 12. End date of book closure: 2026/06/18 13. Other matters that need to be specified: (1) The period for accepting shareholder proposals and nominations for the company's 2026 Annual General Meeting of Shareholders is from 9:00 AM to 5:00 PM daily, from 2026/04/11 to 2026/04/21 (limited to those delivered/mailed within the acceptance period). Acceptance location: Finance Department of Southeast Cement Corporation, Address: 6F, No. 21, Wufu 3rd Road, Qianjin District, Kaohsiung City. For mailings, please mark "Shareholder Meeting Proposal" or "Director/Independent Director Candidate Nomination" on the envelope, send by registered mail, and provide contact person and contact information. (2) Shareholders may exercise their voting rights electronically at this shareholder meeting, with the voting period from 2026/05/19 to 2026/06/15.