Equation Hanoi LTD Address: No 1, Alley 9, 54 Au Co Lane, Tu Lien Ward, Tay Ho District, Ha Noi City Enterprise code: 0108152632 Phone: 01657708785; 0357708785 Representative: Dinh The Hien Tu Lien Ward, Tay Ho District, Ha Noi CityFounding date: 30 - 1 - 2018