Vien Thong SQ Hoang Nguyen LTD Address: No 41, Lane 01, Le Dai Hanh Street, Vinh Trai Ward, Lang Son City, Lang Son Province Enterprise code: 4900814792 Phone: 0902011899 Representative: Hoang Van Tang Vinh Trai Ward, Lang Son City, Lang Son ProvinceFounding date: 6 - 11 - 2017