Notification of the change of the Company's directors, Appointment of Acting Chief Executive Officer, Change of authorized directors

Power Solution Technologies Public Company Limited (the"Company") would like to inform the resolutions of its Board of Directors meeting No. 5/2022 held on 25 May 2022 which details are as follows;

1. To acknowledge the resignation of Mr. Rachanan Chanamai from a director of the Company and Chief Executive Officer, effective on 25 May 2022 onwards.
2. To appoint Miss Piyapat Suwannasang to be Acting Chief Executive Officer to Mr. Rachanan Chanamai , effective on 25 May 2022 onwards.
3. Approve the change of authorized directors as follows:

Existing

" Mr. Rachanan Chanamai, Miss Piyapat Suwannasang, Mr. Prachaya Niyomthai or Mr. Luechai Soodsakorn, two directors sign and affix the seal of the company." New

• Miss Piyapat Suwannasang, Mr. Prachaya Niyomthai or Mr. Luechai Soodsakorn, two directors sign and affix the seal of the company."

Please be informed accordingly,

Sincerely yours,

Ms. Yuwaporn Pumprasert

(Chief Finance Officer)