Tu Van & Dich Vu Ky Thuat Dong Au LTD Address: 20 Tran Duy Hung, Trung Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0101216598 Phone: 0913563049 Trung Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 22 - 3 - 2002