Prof. Fenglan Han is deputy director of the Circular Economy Technology Institute at the Beifang University of Nationalities (BUN), Yinchuan, China. She is the head of the International Scientific and Technological Cooperation Base of Industrial Waste Recycling and Advanced Materials, China. She earned her BSc. (1986) in Chemistry at Sichuan University, China. She is devoted to the treatment and recycling of industrial solid waste and has written more than 50 technical papers and 8 authorized patents. She was presiding the National Projects of magnesium slag (2009) and fly ash (2014). She was honored the Awards of Ningxia Science and Technology in 2006.Prof. Lan'er Wu is a senior professor of the School of Materials Science and Engineering at the Beifang University of Nationalities (BUN), Yinchuan, China. She was the head of the Key Laboratory of Powders and Advanced Ceramics, Ningxia, China. She has been devoted to solid waste management and environmental science over 10 years and has written more than 30 technical papers and has 6 authorized patents in the field. She was honored the Awards of Ningxia Science & Technology in 1986 and 2006, the Award of Special Allowance Experts of the State in 2004, and the Award of Outstanding Contribution in 2007 and 2008. She was honored the distinguished teacher of Ningxia in 2009 and the “Saishangyingcai” Award of Ningxia in 2013.