Dau Tu Vien Thong Htech Joint Stock Company Address: No 63, Lane 245, Dinh Cong Ha Street, Dinh Cong Ward, Hoang Mai District, Ha Noi City Enterprise code: 0107976690 Phone: 0988766675 Representative: Nguyen Xuan Hung Dinh Cong Ward, Hoang Mai District, Ha Noi CityFounding date: 24 - 8 - 2017