Phat Trien Cong Nghe Thong Tin Tong Hop VHL LTD Address: No 20 Le Van Linh, Hang Ma Ward, Hoan Kiem District, Ha Noi City Enterprise code: 0102150452 Phone: 02422156613 Representative: Hoang Huu Tien Adress: Tap The Vien Lao Va Benh Vien Phoi, Cong Vi Ward, Ba Dinh District, Ha Noi City Hang Ma Ward, Hoan Kiem District, Ha Noi CityFounding date: 30 - 1 - 2007