Tu Van Va Xay Dung Thanh Son LTD Address: Truong Son Hamlet, Son Ha Commune, Huu Lung District, Lang Son Province Enterprise code: 4900651763 Phone: 02053825075 Representative: Ha Ngoc Tram Anh Adress: No 7, Alley 220, Lane 405, Ngoc Thuy Ward, Long Bien District, Ha Noi City Son Ha Commune, Huu Lung District, Lang Son ProvinceFounding date: 26 - 4 - 2011