Cong Nghe HHN Viet Nam Joint Stock Company Address: No 11, 20/14, Ho Tung Mau Street, Mai Dich Ward, Cau Giay District, Ha Noi City Enterprise code: 0108961383 Phone: 02462544800 Representative: Luong Duc Van Mai Dich Ward, Cau Giay District, Ha Noi CityFounding date: 5 - 11 - 2019