Dich Vu Bao Ve Thang Long Joint Stock Company Address: No 44, Nguyen Van Linh Street, Thach Ban Ward, Long Bien District, Ha Noi City Enterprise code: 0101584150 Phone: 0249180344 Representative: Doan Quoc Dung Adress: Ban Hamlet, Phu Dong Commune, Gia Lam District, Ha Noi City Thach Ban Ward, Long Bien District, Ha Noi CityFounding date: 20 - 12 - 2004