Tu Van Xay Dung HTC Joint Stock Company Address: No 05, Civil Group 11, Khu 3, Hong Ha Ward, Ha Long City, Quang Ninh Province Enterprise code: 5701562221 Phone: 02036557579 Representative: Dang Minh Chien Adress: No 5, 11a Civil Group, Khu 3, Hong Ha Ward, Ha Long City, Quang Ninh Province Hong Ha Ward, Ha Long City, Quang Ninh ProvinceFounding date: 15 - 12 - 2011