3708 Superclean Investment Holding Announces Name Change to Superclean International Holding Co., Ltd.

Release Date: July 19, 2026 Statement Date: July 18, 2026 Statement Time: 07:00:03 Company Code: 3708 Company Name: Superclean Investment Holding

Subject: Announcement of company name change from 'Superclean International Investment Holding Co., Ltd.' to 'Superclean International Holding Co., Ltd.', with announcement period from June 11, 2026 to September 10, 2026.

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

Details: 1. Factual Date: June 11, 2026 (Republic Era Year 115) 2. Company Name: Superclean International Holding Co., Ltd. (formerly: Superclean International Investment Holding Co., Ltd.) 3. Relationship to Company:本公司 (This Company) 4. Cross-shareholding Ratio: Not applicable 5. Reasons for Change: (1) Date of name change approval / Factual date: June 11, 2026 (2) Approval reference number: Ministry of Economic Affairs Approval No. 11530084540 (3) Shareholders' meeting resolution date for name change: May 28, 2026 (4) Previous company name: Superclean International Investment Holding Co., Ltd. (5) New company name: Superclean International Holding Co., Ltd. (6) Previous company abbreviation: Superclean Investment Holding (7) New company abbreviation: Superclean Holding 6. Countermeasures: None 7. Other Matters to be Disclosed: (1) The company received the Ministry of Economic Affairs' approval notice for registration change on June 11, 2026. (2) According to Article 45 of the Taiwan Stock Exchange Corporation Business Rules, the company must make continuous public announcements for three months following the name change. (3) The company's stock code remains unchanged; ordinary shares continue under '3708'.