Dau Tu Va Phat Trien Do Thi Son Nam Joint Stock Company Address: Pham Ngu Lao Street, Hong Chau Ward, Hung Yen City, Hung Yen Province Enterprise code: 0900642031 Phone: 02213510457 Representative: Nguyen Thuy Trang Adress: No 35, Civil Group 26, Trung Hoa Ward, Cau Giay District, Ha Noi City Hong Chau Ward, Hung Yen City, Hung Yen ProvinceFounding date: 18 - 1 - 2011