Tu Van Va Dich Vu Ky Thuat Dai An Joint Stock Company Address: No 21, 231/32 Chua Boc Lane, Trung Liet Ward, Dong Da District, Ha Noi City Enterprise code: 0104371993 Phone: 02435642496 Representative: Ngo Xuan Khoa Adress: 2 H2, Civil Group 57, Tuong Mai Ward, Hoang Mai District, Ha Noi City Trung Liet Ward, Dong Da District, Ha Noi CityFounding date: 13 - 1 - 2010