Tu Van Dia Ky Thuat Va Moi Truong Joint Stock Company Address: No 17, Lane 7, Nguyen Hong Street, Ba Dinh District, Ha Noi City Enterprise code: 0104195346 Phone: 02466843738 Representative: Le Xuan Dung Adress: P307, Nha K5, Bach Khoa Town, Hai Ba Trung District, Ha Noi City Ba Dinh District, Ha Noi CityFounding date: 7 - 10 - 2009