Dau Tu Vong Ngoc Joint Stock Company Address: Don Dien Hamlet, Ha Khau Ward, Ha Long City, Quang Ninh Province Enterprise code: 5700336981 Phone: 02033857160 Representative: Dao Minh Sieng Adress: No 205/50, Ward 25, Binh Thanh District, Ho Chi Minh City Ha Khau Ward, Ha Long City, Quang Ninh ProvinceFounding date: 11 - 1 - 2008