Tu Van Va Xay Dung DKV LTD Address: No 5, Lane 76, Muoi Street, Tam Thanh Ward, Lang Son City, Lang Son Province Enterprise code: 4900940518 Phone: 0948120319; Representative: Bui Viet Khoa Tam Thanh Ward, Lang Son City, Lang Son ProvinceFounding date: 5 - 3 - 2026