Tu Van Va Xay Lap Dien Duy Tan Joint Stock Company Address: Civil Group 1, Khu 10, Hong Hai Ward, Ha Long City, Quang Ninh Province Enterprise code: 5700602584 Phone: 02033838099 Representative: Duong Van Hoi Adress: 5B Civil Group, Khu 1, Hong Ha Ward, Ha Long City, Quang Ninh Province Hong Hai Ward, Ha Long City, Quang Ninh ProvinceFounding date: 26 - 7 - 2006