Dau Tu Phat Trien Cong Nghe Sam Joint Stock Company Address: KM 5, No 900, Giai Phong Street, Thinh Liet Ward, Hoang Mai District, Ha Noi City Enterprise code: 0102758226 Phone: 0248283502 Representative: Luu Thi Thao Adress: 5, I Hang Khoai Lane, Hoan Kiem District, Ha Noi City Thinh Liet Ward, Hoang Mai District, Ha Noi CityFounding date: 27 - 5 - 2008