Tu Van Khao Sat Xay Dung Va Do Dac Ban Do Thang Long Joint Stock Company Address: No 3, Alley 2, Lane 30, Le Trong Tan Street, La Khe Ward, Ha Dong District, Ha Noi City Enterprise code: 0108262836 Phone: 0983784176 Representative: Nguyen Thanh Tuyen La Khe Ward, Ha Dong District, Ha Noi CityFounding date: 7 - 5 - 2018