Doi Quan Ly Trat Tu Xay Dung Do Thi Huyen Hoai Duc Address: Khu 6, Tram Troi Town, Hoai Duc District, Ha Noi City Enterprise code: 0108526334 Phone: 02433661422 Representative: Nguyen Thuan Thinh Adress: 407 Hong Ha, Hoan Kiem District, Ha Noi City Tram Troi Town, Hoai Duc District, Ha Noi CityFounding date: 26 - 11 - 2018