The Asian Crystallization Technology Society has been founded in 2011 with the aim to provide a forum for academic researchers, scientists and industry experts in Asia and all around the world to discuss recent advances in crystallization science and process technology. Accordingly, the Asian Crystallization Technology Symposium was first held in 2012 in Korea, followed by 2014 in Japan, 2016 in China and 2018 in Singapore. The 5
th Symposium in the series, ACTS-2021, will take place in Pattaya, Thailand from 26-28 May 2021, organized by Vidyasirimedhi Institute of Science and Technology (VISTEC) and Suranaree University of Technology (SUT). The program will include plenary lectures, invited lectures, oral presentations and poster presentations.