DMT will attend the investor conference that held by President Securities Corporation.

SEQ_NO	1	Date of announcement	2026/03/25	Time of announcement	16:20:15
Subject	DMT will attend the investor conference that held by President Securities Corporation.
Date of events	2026/03/25	To which item it meets	paragraph 12
Statement	1.Date of institutional investor conference:2026/03/26 2.Time of institutional investor conference:3:40 p.m.(Taiwan Time) 3.Location of institutional investor conference:Online investor conference. 4.Outline of institutional investor conference: DMT will attend the investor conference that held by President Securities Corporation on 2026/03/26. 5.Any other matters that need to be specified:None.