Tu Van Khao Sat Thiet Ke Ha Noi Joint Stock Company Address: 32 To Vinh Dien, Khuong Trung Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0102998669 Phone: 02435682732 Representative: Hoang Thanh Tuan Adress: 37 A, 255 Nguyen Khang Lane, Yen Hoa Ward, Thanh Xuan District, Ha Noi City Khuong Trung Ward, Thanh Xuan District, Ha Noi CityFounding date: 3 - 11 - 2008