Ngoc Mai Address: 25, Le Loi Street, Vinh Trai Ward, Lang Son City, Lang Son Province Enterprise code: 4900111768 Phone: 02145873396 Representative: Chu Van Ninh Adress: 25, Le Loi Street, Vinh Trai, Lang Son City, Lang Son Province Vinh Trai Ward, Lang Son City, Lang Son ProvinceFounding date: 29 - 10 - 1998