Xay Dung Ha Tang Ky Thuat Truong Sa Joint Stock Company Address: O So 8, Lot B19, KDT Moi Cao Xanh, Ha Khanh A, Cao Xanh Ward, Ha Long City, Quang Ninh Province Enterprise code: 5702015567 Phone: 0848373111 Representative: Nguyen Toan Thang Cao Xanh Ward, Ha Long City, Quang Ninh ProvinceFounding date: 4 - 10 - 2019