• Petro –Tech Conferences, 1997, 1999, 2001, 2003, 2007
  • Oil & Material Convention,  2008
  • International Fidi Congress,2008
  • Pravasi Bharatiya Sammelan, 2007
  • TAAI convention, Cochin 2002
  • Convention of Asian Network of Metropolitan Cities, Tokyo, 2001
  • World convention of Leprosy Mission