Tu Van Ha Tang Dien Nang Luong Va Vien Thong Joint Stock Company Address: No 42a, Lane 255, Vong Street, Dong Tam Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0105504371 Phone: 02436284654 Representative: Nguyen Ngoc Thinh Adress: No 30a, Ba Trieu Street, Hang Bai Ward, Hoan Kiem District, Ha Noi City Dong Tam Ward, Hai Ba Trung District, Ha Noi CityFounding date: 15 - 9 - 2011