Thuong Mai Va Dau Tu Cong Nghe Tan Viet An Joint Stock Company Address: No 220, Giap Bat Street, Giap Bat Ward, Hoang Mai District, Ha Noi City Enterprise code: 0101404383 Phone: 0249720213 Representative: Nguyen Van Son Adress: No 204 Nguyen An Ninh P.Dong Tam, Hai Ba Trung District, Ha Noi City Giap Bat Ward, Hoang Mai District, Ha Noi CityFounding date: 30 - 9 - 2003