Tu Van Dau Tu, Khao Sat, Thiet Ke Va Dia Ky Thuat Viet Joint Stock Company Address: Nha N3, KM2+300, Dai Lo Thang Long Street, Dai Mo Ward, Nam Tu Liem District, Ha Noi City Enterprise code: 0111422367 Phone: 0908529993 Representative: Nguyen Van Bac Dai Mo Ward, Nam Tu Liem District, Ha Noi CityFounding date: 19 - 3 - 2026