Phat Trien Dich Vu Van Tai Hoang Gia Joint Stock Company Address: No 87/12, Van Huong Lane, Ton Duc Thang Street, Hang Bot Ward, Dong Da District, Ha Noi City Enterprise code: 0105393622 Phone: 02466825988 Representative: Dang Hai Sinh Adress: Lien Hoa Hamlet, Gia Cat Commune, Cao Loc District, Lang Son Province Hang Bot Ward, Dong Da District, Ha Noi CityFounding date: 6 - 7 - 2011