Chung Nhan Va Giam Dinh Vistech LTD Address: 14th Floor, Viet A Building, No 9, Duy Tan Street, Cau Giay Ward, Cau Giay District, Ha Noi City Enterprise code: 0111420553 Phone: 0387963692 Representative: Nguyen Van Chung Cau Giay District, Ha Noi CityFounding date: 19 - 3 - 2026