Cong Nghe Thong Minh O2 Viet Nam Joint Stock Company Address: No 67B, Lane 281, Truong Dinh Street, Civil Group 48, Tuong Mai Ward, Hoang Mai District, Ha Noi City Enterprise code: 0107950572 Phone: 0967372586 Representative: Nguyen Van Nhat Tuong Mai Ward, Hoang Mai District, Ha Noi CityFounding date: 8 - 8 - 2017