Cong Trinh Do Thi Hoang Mai Joint Stock Company Address: No 8, Day B, Lane 357, Tam Trinh Street, Hoang Mai District, Ha Noi City Enterprise code: 0104280961 Phone: 02436340395 Representative: Pham Dinh Hien Adress: A9, Ham Tu Quan Street, Hoan Kiem District, Ha Noi City Hoang Mai District, Ha Noi CityFounding date: 3 - 12 - 2009