3708 Shangwei Investment Holding

Release Date: June 20, 2026 Statement Date: June 19, 2026 Statement Time: 7:00:03 AM Company Code: 3708 Company Name: Shangwei Investment Holding

Subject: Announcement of the company name change from "Shangwei International Investment Holding Co., Ltd." to "Shangwei International Holding Co., Ltd.", with the announcement period from June 11, 2027 to September 10, 2027.

Applicable Clause: Item 51 Factual Date: June 11, 2026

Details: 1. Factual Date: June 11, 2026 (Minguo Year 115) 2. Company Name: Shangwei International Holding Co., Ltd. (formerly: Shangwei International Investment Holding Co., Ltd.) 3. Relationship with Company:本公司 (This Company) 4. Cross-shareholding Ratio: Not applicable

5. Reasons for Change: (1) Date of Approval for Name Change / Factual Date: June 11, 2026 (Minguo Year 115) (2) Approval Document Number: Ministry of Economic Affairs Letter No. 11530084540 (3) Shareholders' Meeting Resolution Date for Name Change: May 28, 2026 (Minguo Year 115) (4) Previous Company Name: Shangwei International Investment Holding Co., Ltd. (5) New Company Name: Shangwei International Holding Co., Ltd. (6) Previous Abbreviation: Shangwei Investment Holding (7) New Abbreviation: Shangwei Holding

6. Countermeasures: None

7. Other Matters to be Disclosed: (1) The company received the Ministry of Economic Affairs' approval letter for change of registration on June 11, 2026. (2) According to Article 45 of the Operating Rules of Taiwan Stock Exchange Corporation, the company is required to make continuous announcements for three months following the name change. (3) The company's stock code remains unchanged; ordinary shares continue to be listed under "3708".