Dau Tu Xay Lap Song Da Thang Long Joint Stock Company Address: No 21, Lane 351/10/5, Linh Nam Street, Vinh Hung Ward, Hoang Mai District, Ha Noi City Enterprise code: 0103981428 Phone: 0938721299 Representative: Le Thi Huong Vinh Hung Ward, Hoang Mai District, Ha Noi CityFounding date: 23 - 6 - 2009