Duong Song Dong Duong Joint Stock Company Address: No 47 Dinh Tien Hoang, Da Kao Ward, District 1, Ho Chi Minh City Enterprise code: 0309533099 Phone: 02839105772 Representative: Bui Tuan Ngoc Adress: No 1 Vuon Dao, Bai Chay Ward, Ha Long City, Quang Ninh Province Da Kao Ward, District 1, Ho Chi Minh CityFounding date: 19 - 10 - 2009