Preface: The 9th International Conference on Advanced Material Engineering & Technology (ICAMET 2021).

The 9th International Conference on Advanced Material Engineering & Technology (ICAMET 2021) is a virtual conference that serves as a platform for researchers, engineers, and scientists from around the world to present their new advances and research results in the field of advanced materials engineering, science, computer, management, and technology. The conference was co-organized with the Universitas Negeri Makassar, and all papers from ICAMET 2021 will be published in Scopus Indexed Conference Proceedings. The objectives of the conference are to facilitate the exchange of ideas and research findings, provide an overview of the latest advances in the field, and foster collaborations between researchers. [Extracted from the article]