Tu Van Va Dau Tu Xay Dung Long Son LTD Address: No 30, Lane 188, Le Trong Tan Street, Khuong Mai Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0105674285 Phone: 0979188486 Representative: Pham Xuan Long Adress: No 45 Ben Binh, Minh Khai Ward, Hong Bang District, Hai Phong City Khuong Mai Ward, Thanh Xuan District, Ha Noi CityFounding date: 26 - 11 - 2011