Top Union Electronics: Subsidiary Longyang Electronics (Kunshan) Invests RMB 20 Million in Wealth Management Products

1. Subject Matter: CITIC Securities An Tai Bao Ying Series 1671 Income Certificate [SSGE29]. 2. Date of Occurrence: April 24, 2026. 3. Transaction Quantity and Amount: RMB 20 million for a 275-day term. 4. Counterparty: CITIC Securities Co., Ltd. (No relationship with the company). 5. Accumulated Investment: Total accumulated holding of this security is RMB 20 million. Investment in securities now accounts for 26.151% of total assets and 50.845% of equity attributable to owners of the parent. 6. Purpose: Short-term investment. 7. Source of Funds: Internal funds. 8. Other: The transaction was processed according to internal authorization levels.