Tu Van Va Xay Dung He Thong Dien Bach Khoa Joint Stock Company Address: Zoom 2B2, Building 63, 36 Hoang Cau Civil Group, O Cho Dua Ward, Dong Da District, Ha Noi City Enterprise code: 0104049708 Phone: 02435380053 Representative: Le Viet Hung Adress: No 28, Lane 53, Tan Ap Street, Phuc Xa Ward, Ba Dinh District, Ha Noi City O Cho Dua Ward, Dong Da District, Ha Noi CityFounding date: 15 - 7 - 2009