Dr. Min JIANG is Associate Professor of University of Science and Technology Beijing, and he focused on the control of inclusions in special steel since the year of 2003. He is not only good at designing and doing laboratorial experiments but also has plentiful industrial experiences, achieving important contributions to the breakthroughs in developing high quality special steels in China. Because of that, he had been horned with scientific awards by the government and steel industry associations for four times. Now, he is the team leader of the group.Dr. Xinhua WANG is Professor of University of Science and Technology Beijing, and he focused on clean steelmaking field (including the control of inclusions in steel) in most of his career. He is very respected in steel industry in China for his great contributions in steelmaking technology. He was also the supervisor of Dr. Min JIANG, the first author of the book, during the year of 2003 to 2009.