Du Lich Hai Yen LTD Address: No 97 Dai La, Truong Dinh Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0101125968 Phone: 02439283515 Representative: Pham Thi Hai Yen Adress: No 174/B1 Tan Mai, Tan Mai Ward, Hoang Mai District, Ha Noi City Truong Dinh Ward, Hai Ba Trung District, Ha Noi CityFounding date: 28 - 5 - 2001