Vien Thong Nam Do Joint Stock Company Address: No 9, Alley 25/77, Civil Group 3, Vu Ngoc Phan Street, Lang Ha Ward, Dong Da District, Ha Noi City Enterprise code: 0102340686 Phone: 02436284923 Representative: Le Tuan Canh Adress: P503 Nha A12, Dai La Street, Dong Tam Ward, Hai Ba Trung District, Ha Noi City Lang Ha Ward, Dong Da District, Ha Noi CityFounding date: 14 - 8 - 2007