Son Thanh Joint Stock Company Address: No 15, Nhanh Bac Street, Khu I, Cua Khau Tan Thanh, Van Lang District, Lang Son Province Enterprise code: 4900229463 Phone: 0205888005 Representative: Ho Van Hai Adress: Na Lau Hamlet, Tan Thanh Commune, Van Lang District, Lang Son Province Van Lang District, Lang Son ProvinceFounding date: 2 - 3 - 2005