Phan Mem Ke Toan Tan Viet An Joint Stock Company Address: No 212, Nguyen An Ninh Street, Dong Tam Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0102192389 Phone: 0246647299 Representative: Nguyen Thi Hien Adress: Dong Hamlet, Tu Lan Commune, Viet Yen District, Bac Giang Province Dong Tam Ward, Hai Ba Trung District, Ha Noi CityFounding date: 27 - 3 - 2007