Tu Van Xay Dung Hoang Hiep Joint Stock Company Address: No 48, Lane 5, Hoang Quoc Viet Street, Nghia Do Ward, Cau Giay District, Ha Noi City Enterprise code: 0101526180 Phone: 0247536697 Representative: Bui Quang Hiep Adress: Civil Group 31, Cluster 5, Tu Lien Ward, Tay Ho District, Ha Noi City Nghia Do Ward, Cau Giay District, Ha Noi CityFounding date: 7 - 9 - 2004