In 2000, a few scientists from Asian countries gathered in Bangkok, Thailand, at the International Symposium on Particle Technology to elucidate and discuss the recent results and experimental developments on widespread endeavours in the field of particle technology. A characteristic feature of this symposium is that its organization lies in the hands of International Advisory Committee (hereafter referred to as IAC), International Organizing Committee (hereafter referred to as IOC) and Local Organizing Committee (hereafter referred to as LOC). There is no mighty society in the background. It lives on the enthusiasm, on the commitment and on the scientific curiosity of the regional community working in this important area of considerable industrial importance. 

From then on, the symposium was held in 2003 and in 2007, in Penang, Malaysia and in Beijing, China, respectively. Its frequency was changed from 3 years period to 4 years and the 3rd APT was held in Beijing in 2007, because the Fifth World Congress on Particle Technology was held in Orlando, Florida, USA in 2006. All the past and later symposium 
places are/will be described in the following table as the congress history: