International level: Invited as a special guest to attend World Toilet Summit 2007 - an International Conference and Exhibition on Sanitation and hygiene held at New Delhi between 31.10.2007 and 03.11.2007 organised by The World Toilet Organisation, Singapore, wherein Scientists and experts from 46 countries participated. (including U.S.A., U.K., Russia, China, Japan, Germany etc) She presented a research paper about her system in the World conference. She perhaps be the youngest person who presented a research paper in a World Conference. The World Toilet summit 2006 held previously at Moscow, Russia.;