Du An "cung Co Giao Duc Moi Truong Trong Truong Pho Thong Viet Nam" Address: 52 Lieu Giai, Ba Dinh District, Ha Noi City Enterprise code: 0101639674 Phone: 0248327801; 0248327878 Ba Dinh District, Ha Noi CityFounding date: 21 - 4 - 2005
Du An Vie/98/018-Bo Giao Duc & Dao Tao Address: 50 Lieu Giai, Ba Dinh District, Ha Noi City Enterprise code: 0101024818 Phone: 0248327801 Ba Dinh District, Ha Noi CityFounding date: 23 - 6 - 2000