Ky Thuat Va Cong Nghe Bac Thang Long LTD Address: Nhi Hamlet, Van Tri Hamlet, Van Noi Commune, Dong Anh District, Ha Noi City Enterprise code: 0101584143 Phone: 0249582062 Representative: Tran Thi Phuong Dung Adress: No 81 Civil Group 27, Phuong Lien Ward, Dong Da District, Ha Noi City Van Noi Commune, Dong Anh District, Ha Noi CityFounding date: 20 - 12 - 2004