Yuansu International Trade, founded in 2006, 15 years of R&D and manufacturing experience in oral care industry, has become a National High-tech Enterprise with 100, 000sqm area and 2, 000 employees, focusing on sonic electric toothbrush, oral irrigator, ultraviolet sterilizer, tooth whitening equipment and other oral care products research, production and sales. Every year, Risun Technology takes out a fixed budget for the research and development center as funds in new technologies, new functions and other special research. 95 researchers, 150 patents and 14 software works copyright. As director unit of China Home Appliance Association, Yuansu International Trade is one of the main formulators of Electric Toothbrush industry standard and Electric Oral Irrigator industry standard. Cindy V. Roark, PhD from Harvard University and member of the American Dental Association serve as the Ambassador and Chief Medical Scientist of Risun Technology, and carry out academic exchanges in the field of oral care products and technologies.