Phat Trien Giao Duc Va Thuong Mai Toan Cau Joint Stock Company Address: No 15, Lane 221, Ton Duc Thang Street, Hang Bot Ward, Dong Da District, Ha Noi City Enterprise code: 0101443329 Phone: 0245118167 Representative: Hoang Le Dung Adress: No 74, Ban Yen Nhan Town, My Hao District, Hung Yen Province Hang Bot Ward, Dong Da District, Ha Noi CityFounding date: 20 - 2 - 2004