Mr. Buntoeng  Srikaran and Mr. Natthanon Poolsiri research assistant Participated in the training course without damaging the industry. "Test by using high frequency sound method, Level 1", organized by the National Institute of Nuclear Technology (Public Organization), Ministry of Science and Technology Between 29 April - 4 May 2019, at the meeting room, 3rd floor, Building 9, National Institute of Nuclear Technology (Public Organization), Vibhavadi Rangsit Road, Chatuchak, Bangkok