Dich Vu Hoi Thao Chuyen Nghiep Joint Stock Company Address: No 09, Lane 226, Cau Giay Street, Quan Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0102054879 Phone: 0242660755 Representative: Phung Thi Thanh Hoa Adress: No 39, Trang Tien Street, Trang Tien Ward, Hoan Kiem District, Ha Noi City Quan Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 25 - 10 - 2006