Thuong Mai Dich Vu Va Cong Nghe Vien Thong Hoang Son LTD Address: No 37, Lane 5, Le Trong Tan Street, La Khe Ward, Ha Dong District, Ha Noi City Enterprise code: 0107959504 Phone: 0941893333 Representative: Nguyen Dinh Son La Khe Ward, Ha Dong District, Ha Noi CityFounding date: 14 - 8 - 2017