Truyen Thong Si Joint Stock Company Address: No 69K 1a Civil Group, Dong Da District, Ha Noi City Enterprise code: 0105369330 Phone: 02439948474 Representative: Nguyen Ngoc Minh Adress: No 1112, K5, Moi Viet Hung Urban Area, Long Bien District, Ha Noi City Dong Da District, Ha Noi CityFounding date: 20 - 6 - 2011