Hop Tac Xa Doan Ket Address: 231, B6, Tan Mai, Hoang Mai District, Ha Noi City Enterprise code: 0100513767 Phone: 0248641225 Representative: Pham Hong Hai Adress: No 231 B6 Tan Mai, Tan Mai Ward, Hoang Mai District, Ha Noi City Tan Mai Ward, Hoang Mai District, Ha Noi CityFounding date: 17 - 7 - 1998