Announcement of Subsidiary's Increased Endorsement Guarantee

Release Date: July 2, 2026 Statement Date: July 1, 2026 Statement Time: 17:29:53 Company Code: 1626 Company Name: Airmate-KY

Subject: Announcement by subsidiary Airmate Electric (Shenzhen) Co., Ltd. pursuant to Article 25, Paragraph 1, Clause 3 of the 'Regulations on Loans, Endorsements, and Guarantees by Publicly Issued Companies'.

Applicable Clause: Clause 22 Factual Date: July 1, 2026

Details: 1. Factual Date: 07/01/2026

2. Endorsed and Guaranteed Party: (1) Company Name: Airmate Electric (Jiujiang) Co., Ltd. (2) Relationship to Guarantee Provider: Both are 100% indirectly invested by the same parent company. (3) Endorsement and Guarantee Limit (in thousand NT$): 9,690,710 (4) Previous Endorsement and Guarantee Balance (in thousand NT$): 3,202,201 (5) Amount of New Endorsement and Guarantee This Time (in thousand NT$): 74,807 (6) Endorsement and Guarantee Balance as of Factual Date (in thousand NT$): 3,277,008 (7) Actual Drawdown Amount by Guaranteed Company (in thousand NT$): 1,989,928 (8) Reason for New Guarantee: Additional bank guarantee quota

3. Collateral Provided by Guaranteed Company: (1) Description: None (2) Value (in thousand NT$): 0

4. Latest Financial Statement of Guaranteed Company: (1) Capital (in thousand NT$): 2,329,236 (2) Accumulated Profit/Loss (in thousand NT$): 119,256

5. Conditions for Release of Guarantee Liability: (1) Condition: Expiration of credit agreement (2) Date: Expiration of credit agreement

6. Total Endorsement and Guarantee Limit (in thousand NT$): 52,054,375

7. Total Endorsement and Guarantee Balance as of Factual Date (in thousand NT$): 8,527,367

8. Ratio of A’s Guarantee Balance to Net Asset Value of the Publicly Issued Company as per Latest Financial Statement: 312.46%

9. Ratio of Total Balance of Guarantees, Long-Term Investments, and Loans to Net Asset Value of the Publicly Issued Company: 215.02%

10. Other Matters to be Disclosed: None