Vien Kiem Sat Nhan Dan Huyen Van Quan Address: Duc Hinh I Street, Van Quan Town, Van Quan District, Lang Son Province Enterprise code: 4900439661 Phone: 02053830055 Adress: Van Quan District, Lang Son Province Van Quan Town, Van Quan District, Lang Son ProvinceFounding date: 7 - 12 - 2009