Chuong Trinh Nuoc Va Ve Sinh Tai Cac Thi Tran O Viet Nam Address: 37 Le Dai Hanh, Le Dai Hanh Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0101645903 Phone: 0249742451 Le Dai Hanh Ward, Hai Ba Trung District, Ha Noi CityFounding date: 5 - 5 - 2005