Hoang Yen LTD Address: Civil Group 11, Khu 6, Cai Dam Street, Bai Chay Ward, Ha Long City, Quang Ninh Province Enterprise code: 5700683600 Phone: 0203206460 Representative: Hoang Thi Yen Adress: 48 Khu 5 Civil Group, Ha Khau Ward, Ha Long City, Quang Ninh Province Founding date: 10 - 10 - 2007