It is a good tradition to meet regularly at one conference because it is the background for an open and constructive dialogue. 2021 The 6th International Conference on Smart Materials Technologies (ICSMT 2021) will take place at Kazan, Russian Federation during July 16-19, 2021. Organized by Science and Engineering Institute, supported by Magnitogorsk State Technical University, Russia, Samara University, Russia, and Novosibirsk State Technical University, Russia etc, the objective of ICSMT 2021 is to bring together researchers, scientists, engineers and scholar students in the related fields to exchange and share their experiences, new ideas, and research results, and discuss the practical challenges encountered and the solutions adopted.