Tu Van Va Dau Tu Phat Trien Vien Thong TKT Joint Stock Company Address: No 1, 88 Phuong Liet Lane, Phuong Liet Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0103448805 Phone: 02438685377 Representative: Nguyen Van Tuc Adress: No 1, 88 Phuong Liet Lane, Phuong Liet Ward, Thanh Xuan District, Ha Noi City Phuong Liet Ward, Thanh Xuan District, Ha Noi CityFounding date: 4 - 3 - 2009