1. Dean, College of Engineering, Yuan Ze University (2022/08~present)
2. Chairman, Department of Chemical Engineering and Materials Science, Yuan Ze University (2012/8~ 2015/7)
3. Dean, Office of Research and Development, Yuan Ze University (2006/1-2011/7)
4. Chairman, Graduate School of Biotechnology and Bioengineering, Yuan Ze University (2003/8-2006/7)
5. Vice Dean, Office of Research and Development, Yuan Ze University (2002/08-2003/07)
6. Member, R & D Center for Membrane Technology, Chung Yuan University (2002/06-present)
7. Visiting Professor, Department of Chemical Engineering, Kansas State University (2001/09-2003/07)
8. Director, Life Counseling Section, Office of Student Affairs, Yuan Ze University (1999/3~1999/7)
9. Visiting Scholar, Department of Chemical Engineering, The University of Texas at Austin (1998/07-19998/12)
10. Deputy Director, Environmental Technology Research Center (1992/8~1993/7)
11. Associate Professor, Department of Chemical Engineering, Yuan Ze University (1990/01-1997/12)
12. Postdoctoral Fellow, Basic Pharmaceutics Research, CIBA-GEIGY Corporation, Ardsley, New York (1987/12-1989/12)
13. Research Assistant, Process Synthesis Laboratory, Department of Chemical Engineering, National Taiwan University (1981/07-1982/02)