Kapil Gupta is working as Associate Professor in the Dept. of Mechanical and Industrial Engineering Technology at University of Johannesburg. He obtained Ph.D. in mechanical engineering with specialization in Advanced Manufacturing from Indian Institute of Technology Indore, India. Advanced machining processes, sustainable manufacturing, green machining, precision engineering and gear technology are the areas of his interest. He has authored several International Journal and Conference articles. He has also authored and edited international books on hybrid machining, advanced gear manufacturing, micro and precision manufacturing, and sustainable manufacturing. He is also serving editorial and advisory boards of international journals and conferences. He is a rated Researcher in South Africa. Currently, he is supervising many Masters and Doctorate students and hosting Postdoctoral Fellows who are conducting research in advanced and sustainable manufacturing. Sustainability and Fourth Industrial Revolutions are the major topics he is busy working on at present. J. Paulo Davim is a full professor at the University of Aveiro, Portugal. He is also distinguished as an honorary professor in several universities and colleges in China, India, and Spain. He is the series editor of Elsevier’s Woodhead Publishing Reviews: Mechanical Engineering Series. J. Paulo Davim is a Professor in the Department of Mechanical Engineering of the University of Aveiro, Portugal. He has more than 30 years of teaching and research experience in Manufacturing, Materials and Mechanical Engineering with special emphasis in Machining & Tribology. He has also interest in Management & Industrial Engineering and Higher Education for Sustainability & Engineering Education. He has received several scientific awards, has worked as evaluator of projects for international research agencies as well as examiner of Ph.D. thesis for many universities. He is the Editor in Chief of several international journals, Guest Editor of journals, books Editor, book Series Editor and Scientific Advisory for many international journals and conferences. Presently, he is an Editorial Board member of 30 international journals and acts as reviewer for more than 80 prestigious Web of Science journals. In addition, he has also published as editor of more than 100 books and as author of more than 10 books, 60 book chapters and 400 articles in journals and conferences.