1721 Sunko Announces Corporate Name Change to Guoqing Technology

Release Date: July 8, 2026 Statement Date: July 7, 2026 Statement Time: 07:00:03 Company Code: 1721 Company Name: Sunko Subject: Announcement of Corporate Name Change from "Sunko Co., Ltd." to "Guoqing Technology Corporation", effective from July 1, 2026 to September 30, 2026. Applicable Clause: Item 51 Event Date: June 29, 2026 Details: 1. Event Date: June 29, 2026 (Minguo Year 115) 2. New Company Name: Guoqing Technology Corporation (formerly Sunko Co., Ltd.) 3. Relationship to Company:本公司 (This Company) 4. Cross-shareholding Ratio: Not applicable 5. Reasons for Change: (1) Approval Date of Name Change / Event Date: June 29, 2026 (2) Approval Document Number: 11530099260 (3) Shareholders' Meeting Resolution Date for Name Change: June 16, 2026 (4) Previous Company Name: Sunko Co., Ltd. (5) New Company Name: Guoqing Technology Corporation (6) Previous Company Abbreviation: Sunko (7) New Company Abbreviation: Guoqing Technology 6. Countermeasures: None 7. Additional Disclosures: (1) The company received the Ministry of Economic Affairs' approval letter for change of registration on July 1, 2026. (2) According to Article 45 of the Taiwan Stock Exchange Corporation's Business Rules, a three-month consecutive public announcement is required after a name change. (3) The company's stock code remains unchanged; ordinary shares continue to be listed under "1721". (4) The company's English name remains unchanged as "SUNKO INK CO., LTD."