Du An "tang Cuong San Xuat Va Su Dung Gach Khong Nung O Viet Nam" Address: 113 Tran Duy Hung, Trung Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0106784192 Phone: 02435560630 Representative: Nguyen Dinh Hau Trung Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 6 - 3 - 2015