1990-1992.in Berlex pharmaceutics,Inc., Position: Head of R&D Team

1992-1995 in Cygnus, Inc., Position: Senior Fellow

1995-2000 in Nanguang Pharmaceutical Company, Position: Director of R&D

2000-2008 in Dermatrends, Inc., Position: Deputy Director of Research and Development

2008-2013 in D3 for me (USA), Position: Deputy Director of Research and Development