Cong Nghe & Tu Van Xay Dung Hoang Anh LTD Address: No 274, Nguyen Phi Khanh Street, Tam Thanh Ward, Tinh Lang Son, Viet Nam Enterprise code: 4900940500 Phone: 0976478333 Representative: Lanh Thi Hanh Tam Thanh Ward, Lang Son City, Lang Son ProvinceFounding date: 5 - 3 - 2026