Be Tong Vidifi Joint Stock Company Address: 2nd Floor, Constrexim 8 Building, KM 8, Nguyen Trai Street, C7, Thanh Xuan Bac Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0103947089 Phone: 02462858430 Representative: Luu Van Huan Adress: Hamlet 7, Canh Thuy Commune, Yen Dung District, Bac Giang Province Thanh Xuan Bac Ward, Thanh Xuan District, Ha Noi CityFounding date: 9 - 6 - 2009