The 4th International Conference on Materials Science and Materials Chemistry is a great scientific event for the professionals, scientists, students, and other personnel from the science community to show their iconic works and share ideas to gain knowledge. This event is anticipated to enhance thoughts, kick-in ideas, and develop international scientific relations. The conference covers a wide range of topics that include nanomaterials and nanotechnology; biomaterials, tissue engineering, and healthcare; polymers, ceramics, and composites; materials in defense, aerospace, and mechanical engineering; electrical, optical, and magnetic materials; materials science in construction engineering; mining, metallurgy, and materials science; energy materials in renewable and sustainable energy development, and so on.