Hang Khu Address: 407, Tran Dang Ninh, Tam Thanh Ward, Lang Son City, Lang Son Province Enterprise code: 4900218013 Phone: 02145871313 Representative: Hoang Thi Hang Adress: 407, Tran Dang Ninh, Tam Thanh Ward, Lang Son City, Lang Son Province Tam Thanh Ward, Lang Son City, Lang Son ProvinceFounding date: 4 - 1 - 2005