【KAIJIA-KY】Subsidiaries Suzhou Kaijia/Kede/KaiCai/Aipulai/Baihong/Kaihuang/Kaijun Announce Cumulative Acquisition of the Same Securities Reaching 20% of Paid-in Capital Within One Year

1. Securities Name: Shanghai Stock Exchange One-Day National Debt Reverse Repurchase GC001, Code 204001 2. Transaction Date: 2026/4/7~2026/4/7 3. Board of Directors Approval Date: Not applicable 4. Other Approval Date: Approval Level: Chairman's Approval, April 7, 2026 5. Transaction Quantity, Unit Price, and Total Transaction Amount: Aipulai: 55,390 units, average price: 1.400%; Baihong: 112,880 units, average price: 1.400%; KaiCai: 1,124,240 units, average price: 1.401%; Kaihuang: 169,800 units, average price: 1.400%; Kaijia: 122,610 units, average price: 1.400%; Kede: 446,190 units, average price: 1.395%; Kaijun: 341,980 units, average price: 1.405%; Total amount: 237,309 thousand yuan (approximately 1,128,961 thousand New Taiwan dollars) 6. Disposal Profit (or Loss) (Not applicable for acquisition of securities): Not applicable 7. Relationship with the Transacted Company: Non-related party 8. As of now, the cumulative holding of these securities (including this transaction) in terms of quantity, amount, shareholding ratio, and restricted rights (e.g., pledge status): Aipulai: 55,390 units, average price: 1.400%; Baihong: 112,880 units, average price: 1.400%; KaiCai: 1,124,240 units, average price: 1.401%; Kaihuang: 169,800 units, average price: 1.400%; Kaijia: 122,610 units, average price: 1.400%; Kede: 446,190 units, average price: 1.395%; Kaijun: 341,980 units, average price: 1.405%; Pledge status: None 9. As of now, the investment in securities (including this transaction) listed in Article 3 of the "Regulations Governing the Acquisition and Disposal of Assets by Public Companies" as a percentage of the company's most recent financial report's total assets and equity attributable to owners of the parent, and the amount of working capital in the most recent financial report: Percentage of total assets: 23.89%; Percentage of shareholders' equity: 31.72%; Working capital: 2,515,979 thousand New Taiwan dollars 10. Specific Purpose of Acquisition or Disposal: Financial investment 11. Opinions of Dissenting Directors on this Transaction: None 12. This Transaction is a Related Party Transaction: No 13. Counterparty and its Relationship with the Company: Not applicable 14. Date of Approval by Supervisors or Audit Committee: Not applicable 15. Date of Previous Major Announcement on the Same Event: Not applicable 16. Other Explanations: None. Keywords: Material Information