Conference of the International Marangoni Association (IMA) is coordinated by International Marangoni Association. The main objective of the 9th Conference of the International Marangoni Association (IMA9) is to provide opportunities for scientists and engineers, working on the Interfacial Fluid Dynamics and Processes, to exchange their knowledge and ideas, and to renew their friendship. Previous conferences were held successfully in Gießen (2001), Brussels (2004), Gainesville, FL (2006), Tokyo (2008), Florence (2010), Haifa (2012), Vienna (2014) and the most recent one in Bad Honnef (2016). The 9th Conference of the International Marangoni Association (IMA9) will take place at the City Centre“Lijiang Waterfall Hotel”, Guilin, China on August 31-September 5, 2018.