Tu Van Khao Sat Thiet Ke Mo - Dia Chat Joint Stock Company Address: 10a, Street 69, Nghia Tan Ward, Cau Giay District, Ha Noi City Enterprise code: 0101130742 Phone: 0247542334 Representative: Duong Van Phong Adress: 10a Civil Group 50, Nghia Tan Ward, Cau Giay District, Ha Noi City Nghia Tan Ward, Cau Giay District, Ha Noi CityFounding date: 11 - 6 - 2001