VOLUNTARY ANNOUNCEMENT - ANNOUNCEMENT IN RELATION TO RELEVANT PRESENTATION MATERIALS ON INVESTOR DAY ON 18 JUNE 2024

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this document.SUNNY OPTICAL TECHNOLOGY (GROUP) COMPANY LIMITED 舜宇光学科技（集团）有限公司 (Incorporated in the Cayman Islands with limited liability) (Stock Code: 2382.HK) VOLUNTARY ANNOUNCEMENT ANNOUNCEMENT IN RELATION TO RELEVANT PRESENTATION MATERIALS ON INVESTOR DAY ON 18 JUNE 2024 This announcement is made by Sunny Optical Technology (Group) Company Limited (the “Company”) on a voluntary basis.In order to enhance the communication with investors the board (the “Board”) of directors (the “Directors” and each a “Director”) of the Company is pleased to announce that an investor day of the Company (the “Investor Day”) focusing on optical market development and technology trend shall take place later today.Materials provided by the Company during the Investor Day are available on the website of the Company at www.sunnyoptical.com for fourteen days.You may access the materials by clicking “Investor Relations” on the home page of our website then selecting “Presentation Materials”.By order of the Board Sunny Optical Technology (Group) Company Limited Ye Liaoning Chairman and Executive Director China 18 June 2024 As at the date of this announcement the Board comprises Mr. Ye Liaoning Mr. Sun Yang and Mr.Wang Wenjie who are executive Directors; Mr. Wang Wenjian who is non-executive Director and Mr. Feng Hua Jun Mr. Shao Yang Dong and Ms. Jia Lina who are independent non-executive Directors.