Dau Tu Thuong Mai Ky Thuat NTT Joint Stock Company Address: Zoom 706 Khu A, M3-M4 Building, No 91 Nguyen Chi Thanh, Lang Ha Ward, Dong Da District, Ha Noi City Enterprise code: 0102555949 Phone: 02439650648 Representative: Nguyen Thi Tam Don Lang Ha Ward, Dong Da District, Ha Noi CityFounding date: 7 - 12 - 2007