Tung Khoa Joint Stock Company Address: No 73C/291 Lac Long Quan, Nghia Do Ward, Cau Giay District, Ha Noi City Enterprise code: 0102085820 Phone: 0906265052 Representative: Dang Xuan Hoang Nghia Do Ward, Cau Giay District, Ha Noi CityFounding date: 4 - 12 - 2006