China Chemical to Apply for Cancellation of Second Domestic Unsecured Convertible Bond Issuance

1. Date of occurrence: 2026/05/20 2. Date of original announcement: 2025/12/10 3. Brief description of original announcement: Announcement of the Board of Directors' resolution to issue the company's second domestic unsecured convertible bonds. 4. Reason for change and main content: (1) The company's filing to issue its second domestic unsecured convertible bonds, with a maximum of 6,000 units, a face value of NT$100,000 each, and a total upper limit of NT$600,000,000, was approved for effectiveness by the FSC letter Jin-Guan-Zheng-Fa-Zi No. 1140369068 on January 14, 2026, and the fundraising period was extended to July 13, 2026, by FSC letter Jin-Guan-Zheng-Fa-Zi No. 1150338556 on March 30, 2026. (2) Due to recent changes in the market environment and stock price, the company has re-evaluated and adjusted this fundraising plan. To protect shareholder rights and in coordination with capital allocation planning, the company intends to apply to the Financial Supervisory Commission to cancel this second domestic unsecured convertible bond case. 5. Impact of the change on the company's finances and business: No significant impact. The originally intended use of funds was to repay bank loans. This will now be covered by bank loans or internal funds, to be repaid either early or upon maturity of the original loan. 6. Other matters to be specified: None.