Dau Tu Thiet Ke Vong Tron Joint Stock Company Address: No 26, 132 Kham Thien Lane, Kham Thien Ward, Dong Da District, Ha Noi City Enterprise code: 0105281421 Phone: 0913043839 Representative: Tran Thanh Tung Adress: No 728, Nguyen Khoai Street, Thanh Tri Ward, Hoang Mai District, Ha Noi City Kham Thien Ward, Dong Da District, Ha Noi CityFounding date: 28 - 4 - 2011