O To Toan Cau Group Joint Stock Company Address: Zoom 106, 1st Floor, Kim Anh Building, No 1, Lane 78, Duy Tan Street, Dich Vong Hau Ward, Cau Giay District, Ha Noi City Enterprise code: 0108054113 Phone: 0917544444 Representative: Nguyen Thi Le Hanh Dich Vong Hau Ward, Cau Giay District, Ha Noi CityFounding date: 10 - 11 - 2017