Cheng Mei Materials Technology Corporation announced Research and Development officer change of the company. Name, title, and resume of the previous position holder: LH, Lo, President of the Company, acting temporary Research and Development officer. Name, title, and resume of the new position holder: ZH, Guo, Delta Electronics Inc., Senior manager of R&D headquarters TPK Holding Co.

Ltd., director of Nanosilver BU. Effective date is May 3, 2022. Research and Development officer new appointment will be submitted to the Board of Directors meeting for ratification.