Hop Tac Cong Nghe Son Toto Joint Stock Company Address: No 27, Vu Tong Phan Street, Khuong Trung Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0104981773 Phone: 02435563490 Representative: Tran Thi Phuong Khuong Trung Ward, Thanh Xuan District, Ha Noi CityFounding date: 1 - 11 - 2010