The 7th ICCMME 2022 and the 12th ICAMR 2022 aimed to provide a platform for finding existing problems, future challenges and future joint research opportunities between various institutions for composite materials and engineering applications. Presented articles from the conferences comprised in this collection are related to materials science and reflect the latest research results in this area as well as provide readers with an extensive overview of the latest composite materials and serve as a valuable reference for further research. Polymer, Composite, Steel, Alloy, Biomedical Materials, Functional Materials, Nanoparticles, Materials Forming, Additive Manufacturing, Membrane, Building Materials Materials Science, Building Materials, Bioscience and Medicine.