Shyh-shin Hwang is a Professor of Mechanical Engineering at Chien-hsin University of Science and Technology, Taiwan, and manages the precise injection molding laboratory. He received his BS in Mechanical Engineering (Feng-Chia University, Taiwan), MS in Mechanical Engineering (Northeastern University, Boston, MA), and his PhD in Mechanical Engineering (University of Rochester, Rochester, NY). His research area is related to the microcellular, nano-composites foaming, over-molding, and water-assisted injection molding process.