Ha Tang Vien Thong CMC Joint Stock Company Address: 3rd Floor, No 16 Lieu Giai, Ba Dinh District, Ha Noi City Enterprise code: 0104349589 Phone: 02437674688 Representative: Nguyen Duc Thanh Adress: 3rd Floor, No 16 Lieu Giai, Ba Dinh District, Ha Noi City Ba Dinh District, Ha Noi CityFounding date: 31 - 12 - 2009