On behalf of the 9th Conference of the International Marangoni Association IMA9) and the Organizing Committee, it is our privilege to invite you to the 9th Conference of the International Marangoni Association- Interfacial Fluid Dynamics and Processes, August 31 – September 5, 2018,Guilin, China! We are honored to host this event, and look forward to welcoming our friends and colleagues from around the world.