5215 Kechia-KY

Announcement Date: July 4, 2026 Statement Date: July 3, 2026 Statement Time: 17:02:42 Company Code: 5215 Company Name: Kechia-KY

Subject: Announcement on Subsidiaries Suzhou Jiaji, Kede, Jiacai, Aipulai, Baihong, Jiahuang, and Jiajun Cumulatively Disposing of the Same Securities Exceeding 20% of Paid-in Capital Within One Year

Applicable Clause: Item 20 Factual Date: July 3, 2026

Details: 1. Security Name: 1-day Government Bond Reverse Repo (GC001, Code 204001) on the Shanghai Stock Exchange 2. Transaction Date: July 3, 2026 ~ July 3, 2026 3. Board Approval Date: Not applicable 4. Other Approval Dates: Approval Level: Approved by Chairman July 2, 2026 (Minguo Year 115)

5. Transaction Quantity, Unit Price, and Total Amount: Aipulai: 84,430 units, average rate: 1.295% Baihong: 103,590 units, average rate: 1.290% Jiacai: 433,140 units, average rate: 1.280% Jiahuang: 220,400 units, average rate: 1.290% Jiaji: 121,020 units, average rate: 1.280% Kede: 198,210 units, average rate: 1.280% Jiajun: 357,200 units, average rate: 1.290% Total Amount: NT$710,375 thousand (approximately RMB 151,815 thousand)

6. Gain (or Loss) from Disposal (not applicable for acquisition): Disposal gain: RMB 16 thousand

7. Relationship with the Counterparty: Non-related party

8. Cumulative Holdings of the Security (including this transaction) to Date by Subsidiaries: Suzhou Aipulai: None Suzhou Baihong: None Suzhou Jiacai Electronics: None Suzhou Jiahuang Electronics: None Suzhou Jiaji Electronics: None Suzhou Kede: None Chongqing Jiajun: None Pledge Status: None

9. Proportion of Securities Investment (including this transaction) under Article 3 of the 'Regulations on Acquisition or Disposal of Assets by Publicly Issued Companies' to Total Assets and Equity Attributable to Owners of the Parent in the Latest Financial Statements, and Working Capital: Proportion to Total Assets: 14.27% Proportion to Shareholders' Equity: 19.88% Working Capital: NT$2,612,388 thousand

10. Specific Purpose of Acquisition or Disposal: Investment and financial management

11. Dissenting Director Opinions on This Transaction: None

12. Whether This Transaction is a Related-Party Transaction: No

13. Counterparty and Its Relationship with the Company: Not applicable

14. Date of Supervisor Approval or Audit Committee Consent: Not applicable

15. Previous Material Information Disclosure Date for the Same Event: Not applicable

16. Other Explanatory Matters: None