Phat Trien Vien Thong Viet Nam Joint Stock Company Address: Nha 9, Lot CL1 - A2, Nghia Do Urban Area, Dich Vong, Quan Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0102377929 Phone: 02436647606 Representative: Vu Nhat Anh Adress: No 139a, Mai Hac De Street, Le Dai Hanh Ward, Hai Ba Trung District, Ha Noi City Quan Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 5 - 10 - 2007