Vien Nghien Cuu Phat Trien Va Dao Tao D-Elite LTD Address: 7th Floor, Doji Tower - So 05 Le Duan Building, Phuong, Ba Dinh District, Ha Noi City Enterprise code: 0111373342 Phone: 02433662288 Representative: Do Vu Phuong Anh Ha Noi CityFounding date: 30 - 1 - 2026