Ontest Viet Nam Joint Stock Company Address: No 9, 54 Le Quang Dao Lane, Phu Do Ward, Nam Tu Liem District, Ha Noi City Enterprise code: 0108134979 Phone: 0972344951 Representative: Le Van Hien Phu Do Ward, Nam Tu Liem District, Ha Noi CityFounding date: 17 - 1 - 2018