Engineering technology at 4 h. H. 4" by A. and . Medvedeva is the completion of a large-scale work devoted to the basics and modern aspects of engineering technology. This work will be of interest to both students of technical universities and practicing engineers seeking to deepen their knowledge in the field of mechanical engineering and to master the advanced methods and technologies applied in this dynamically developing industry. The fourth part of the book covers a wide range of topics, including modern materials processing technologies, automation of production processes and the introduction of innovative solutions in mechanical engineering. The author shares his deep knowledge and experience, which makes the text not only informative, but also practical. Readers will be able to get acquainted with the latest achievements in the field of technologies that are already applied in leading enterprises, as well as with the prospects for their development in the future. Medvedev, A. and . a well-known specialist in the field of mechanical engineering, who not only has theoretical knowledge, but also practical experience. His previous works, such as "Engineering Technology. Part 1" and "Engineering Technology. Part 2”, has already managed to win the trust of readers due to its accessibility and depth of presentation. In the fourth part, the author continues to follow his style, combining a scientific approach with practical examples, which makes the material easy to perceive. The book will be especially useful for students studying in the specialties "Engineering", "Engineering" and "Material Technology", as well as for graduate students and young professionals who are just starting their way in this field. It will become an indispensable tool for those who want not only to master the theory, but also to learn how to apply the knowledge gained in practice. In addition, this publication may be of interest to teachers and researchers engaged in research in the field of mechanical engineering .. Topics discussed in the book are relevant for modern production. In the context of globalization and rapid technological progress, mechanical engineering is becoming an increasingly important element of the economy. The book raises issues related to the efficiency of production processes, cost optimization and the introduction of new technologies, which makes it especially valuable for professionals seeking to remain competitive in the labor market. One of the key topics discussed in the fourth part is the automation and digitalization of processes in mechanical engineering. With the rapid development of technologies such as artificial intelligence and the Internet of Things, understanding these processes becomes necessary for successful work in the industry. Medvedev shares with readers not only theoretical foundations, but also practical examples of the introduction of automated systems at enterprises Engineering technology at 4 h. H. 4" is not just a textbook, but a real encyclopedia of modern technologies that will help readers not only to master the theory, but also to learn how to apply it in practice. If you are interested in mechanical engineering, want to learn about the latest trends and technologies, then this book will become for you a real guide to the world of modern production processes. Do not miss the opportunity to expand your knowledge and skills by immersing yourself in the fascinating and multifaceted world of engineering technology with A. and . Medvedev!