Rongke Announces Establishment of Subsidiary in Thailand

Date of Announcement: August 14, 2026 Date of Statement: August 13, 2026 Time of Statement: 15:19:38 Company Code: 4989 Company Name: Rongke Subject: Announcement of Board Resolution to Establish Subsidiary in Thailand Applicable Clause: Item 51 Factual Date: August 13, 2026 Details: 1. Factual Date: 8/13/2026 2. Company Name: LCY Chemical Corporation 3. Relationship with Company (enter '本公司' or 'Subsidiary'):本公司 (Our Company) 4. Cross-shareholding Ratio: Not applicable 5. Reason for Occurrence: The company's board of directors has resolved to establish a subsidiary in Thailand to meet operational needs, expand business footprint, and promote diversified business models. 6. Response Measures: (1) Total planned investment capped at NT$600 million. (2) The chairman is authorized to handle all matters related to the investment. 7. Other Matters to be Disclosed (If the subject of the event or resolution is a publicly listed company or above, this material information also qualifies as a matter under Article 7, Paragraph 9, Item 9 of the Enforcement Rules of the Securities and Exchange Act that significantly affects shareholders' rights or securities prices): This resolution requires approval from relevant regulatory authorities before proceeding.