O To An Hung Joint Stock Company Address: No 1, Le Trong Tan Street, Khuong Mai Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0100946552 Phone: 02462571616 Representative: Luu Quang Tien Adress: No 4, 30a Civil Group, Thinh Liet Ward, Hoang Mai District, Ha Noi City Khuong Mai Ward, Thanh Xuan District, Ha Noi CityFounding date: 2 - 11 - 1999