Change of securities' name Subject : Change of securities symbol of PSTC Company name : POWER SOLUTION TECHNOLOGIES PUBLIC COMPANY LIMITED (PSTC) Securities symbol - old : PSTC Securities symbol - new : POWER Securities symbol - old : PSTC-W3 Securities symbol - new : POWER-W3 Securities symbol - old : PSTC-W4 Securities symbol - new : POWER-W4 Effective date : 24-Jul-2026 ______________________________________________________________________

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