Thuong Mai Va Dich Vu Hong Son LTD Address: No 20, Lane 260/20, Cau Giay Street, Quan Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0101527441 Phone: 0904196569 Representative: Nguyen Thi Kim Thanh Adress: No 8, Hang Buom Street, Hang Buom Ward, Hoan Kiem District, Ha Noi City Quan Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 10 - 9 - 2004