Dr. Shih-Cheng Hu is a Professor in the Department of Energy and Refrigerating Air-Conditioning Engineering and the director of Center for Cleanroom Technology Research, National Taipei University of Technology. He is also the secretary general of the Taiwan Clean Technology Association (TCTA), which has more than 500 individual members and 50 company members from facility department of high-tech companies in Taiwan. In the past 18 years, he has been involved in the design/verification of cleanrooms of semiconductor/TFT-LCD fabs.