Nghien Cuu Va Phat Trien Giao Duc O Xinh LTD Address: No 285, Doi Can Street, Lieu Giai Ward, Ba Dinh District, Ha Noi City Enterprise code: 0107713243 Phone: 0983868230 Representative: Dinh Phuong Thao Lieu Giai Ward, Ba Dinh District, Ha Noi CityFounding date: 20 - 1 - 2017