Trac Dia Khao Sat Xay Dung 3S LTD Address: No 234, Dinh Hamlet, Trieu Khuc Hamlet, Tan Trieu Commune, Tan Trieu Commune, Thanh Tri District, Ha Noi City Enterprise code: 0101534047 Phone: 0903400222 Representative: Nguyen Quang Duc Adress: Zoom 8 B7, Dai Hoc Ngoai Thuong Town, Dong Da District, Ha Noi City Tan Trieu Commune, Thanh Tri District, Ha Noi CityFounding date: 27 - 9 - 2004