Quantumgroup Joint Stock Company Address: No 69a An Duong, Yen Phu Ward, Tay Ho District, Ha Noi City Enterprise code: 0110927541 Phone: 0906969586 Representative: Vu Dinh Quyet Yen Phu Ward, Tay Ho District, Ha Noi CityFounding date: 6 - 1 - 2025