Preface: 7th International Conference on Materials Science, Machinery and Energy Engineering (MSMEE 2025)

2025 7th International Conference on Materials Science, Machinery and Energy Engineering (MSMEE 2025) was successfully held from May 24-25, 2025 in Rio, Brazil. The conference invited scholars and experts in the fields of materials science, mechanical automation, mechatronics, electrical engineering, and energy engineering from various universities and institutes, to participate in the review and guidance of this conference. MSMEE 2025 focuses on the latest research fields and aims to provide an international cooperation and exchange platform for experts, scholars and business managers to share their research achievements, discuss the key challenges and research directions, and jointly promote the industrialization cooperation and continuous innovation of international academic achievements. This collection of proceedings compiles oral and paper presentations submitted by the authors and scrutinized by the special committee. The format of questioning and discussion was that after each author’s introduction, the conference chairman and committee members asked and answered questions. The organizing and editorial committee of the MSMEE 2025 hopes you enjoy the reading of this volume. Besides, we wish to thank all authors and participants for providing their valuable contributions for this proceeding as well as the reviewers for their constructive recommendations and criticism aiding to improve the presented articles. We are confident that this issue will serve as a reference for experts, scholars, and enterprise managers. With best regards, MSMEE Technical Program Committees Rio, Brazil