Tu Van Thiet Ke Do Dac Ban Do Ha Noi Joint Stock Company Address: No 83, Bui Huy Bich Street, Phuong, Hoang Mai District, Ha Noi City Enterprise code: 0111366793 Phone: 0986651361 Representative: Dang Thanh Hoang Ha Noi CityFounding date: 27 - 1 - 2026