Change of company profile

Notify Company Information Change Effective Date of Information Change : 29-Dec-2025 Company Address Postal Code (Current) : 10900 Postal Code (New) : 10110 Company Address (Current) : 50 Chulabhorn Science Research Center Building, 60th Anniversary, Faculty of Science Kasetsart University, 5th Floor, Ngamwongwan Road, Ladyao Subdistrict, Chatuchak District Company Address (New) : 1319, Apac Tower, 26th Floor, Sukhumvit Rd, Phra Khanong Nuea, Watthana, Company Contact Fax (New) : - ______________________________________________________________________ The company hereby certifies that the information above is correct and complete. Signature _________________ ( Mrs.Nopparat Suttiluk ) Company Secretary Authorized person to disclose information ______________________________________________________________________ This announcement was prepared and disseminated by listed company or issuer through the electronic system which is provided for the purpose of dissemination of the information and related documents of listed company or issuer to the Stock Exchange of Thailand only. The Stock Exchange of Thailand has no responsibility for the correctness and completeness of any statements, figures, reports or opinions contained in this announcement, and has no liability for any losses and damages in any cases. In case you have any inquiries or clarification regarding this announcement, please directly contact listed company or issuer who made this announcement. If you would like to see the full details of this information, please click view "full details" in attached file.