Professor and Director, Institute of Biochemistry, National Chung Hsing University 2001~2004
Professor, Institute of Biochemistry, National Chung Hsing University 1998~
Associate Professor, Genetic Engineering Center, National Chung Hsing University 1992~1998
Technician, Department of Agrochemistry, Taiwan Provincial Agricultural Laboratory 1982~1992
Assistant, Department of Agrochemicals, Agricultural Laboratory, Taiwan Province 1981~1982