【Sinbon】Announcement of the Board of Directors' Approval to Change the Establishment of Tongluo Branch and Factory Investment Plan

1. Date of board of directors or shareholders' meeting resolution: 2026/04/23 2. Investment plan content: To expand production capacity, it is planned to establish a Tongluo branch in Miaoli Tongluo Science Park and lease land for commissioned factory construction. 3. Estimated investment amount: The estimated factory construction investment amount is NT$4.3 billion. 4. Estimated investment date: Investment will be made in phases according to actual needs. 5. Source of funds: Fundraising 6. Specific purpose: To meet the needs of operational development. 7. Other matters that need to be specified: The company's board of directors approved a Tongluo branch factory construction cost of NT$3.2 billion on March 6, 2025. Due to actual engineering budget requirements, the investment amount is now proposed to be increased to NT$4.3 billion. Keywords: Material Information