Thuong Mai Ky Thuat Hong Son LTD Address: Zoom 601, D4a, Tap The Thanh Cong, Thanh Cong Ward, Ba Dinh District, Ha Noi City Enterprise code: 0101058782 Phone: 02436339255 Representative: Do Hong Son Thanh Cong Ward, Ba Dinh District, Ha Noi CityFounding date: 12 - 10 - 2000