B 4 Joint Stock Company Address: No 212 Nguyen An Ninh, Dong Tam Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0101643462 Phone: 0983010205 Representative: Nguyen Dinh Cuong Adress: No 28, Cam Van Lane, Ton Duc Thang Street, Dong Da District, Ha Noi City Dong Tam Ward, Hai Ba Trung District, Ha Noi CityFounding date: 28 - 4 - 2005