GAN Yi (1974-), male, Ph.D., associate professor; main research fields: advanced manufacturing and networked manufacturing; E-mail: yisq@sohu.com. QI Cong-qian (1946-), male, professor; main research fields: advanced manufacturing and networked manufacturing; E-mail: cqqi @ mail.tongji.edu.cn. MAI Yun-fei (1968-), male, associate professor; main research field: advanced manufacturing; E-mail: Technology.m2005 @ 163.com.