Vihappy Joint Stock Company Address: No 106, 4C Lane, Dang Van Ngu Street, Trung Tu Ward, Dong Da District, Ha Noi City Enterprise code: 0103811056 Phone: 02435147065 Representative: Pham Minh Hoang Adress: No 43, Le Lai Street, Hoang Van Thu Ward, Lang Son City, Lang Son Province Trung Tu Ward, Dong Da District, Ha Noi CityFounding date: 14 - 5 - 2009