Assoc. Prof. Dr. Chongdee Buranachai (TAB-CoE director and a lecturer from the Division of Physical Sciences) and Ms. Titiwan Changsan (Ph.D. student) attended the TechnoMart 2022 under center of excellence for innovation in chemistry (PERCH-CIC) in order to present the research entitled “Magnetic microsphere sorbent for extraction of trace pesticides in fresh vegetable and fruit” and exchange research works with scientists from Thailand during September, 29th- October, 2nd 2022 at Siam Paragon, Bangkok, Thailand.