Tu Van Thiet Ke Xay Dung Va Thuong Mai Thien Son Joint Stock Company Address: No 26, Lane 280/1, Le Trong Tan Street, Khuong Mai Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0106146584 Phone: 0912177531 Representative: Chu The Su Adress: Hamlet 8, Khanh Hong Commune, Yen Khanh District, Ninh Binh Province Khuong Mai Ward, Thanh Xuan District, Ha Noi CityFounding date: 8 - 4 - 2013