THHH Truong Hoan Address: 31 Dinh Tien Hoang, Hoan Kiem District, Ha Noi City Enterprise code: 0100255428 Phone: 0248266858 Representative: Mai Xuan Truong Adress: 31 Dinh Tien Hoang, Hoan Kiem District, Ha Noi City Hoan Kiem District, Ha Noi CityFounding date: 23 - 6 - 1998