Dr. Houshang Tadayon is the owner and executive director of Donya Dental Supply Incorporated in Canada. He earned his Doctorate degree in dentistry from Shahid Beheshti University of Medical Sciences, School of Dental Medicine on 1990 in Iran. He has been practicing his profession for over 30 years in Gorgan, Iran. As a side business, Dr. Tadayon has worked with Kian Teb Atlas Co. (an exclusive agent in Iran of Biotech Dental Company from France) in sales and marketing of dental products.