Cty TNHH Du Lich Yen Yen Address: Khu Du Lich Mau Son, Mau Son Commune, Loc Binh District, Lang Son Province Enterprise code: 4900251966 Phone: 0205744303 Representative: Hoang Van Ta Adress: No 51, Minh Khai Street, Loc Binh Town, Loc Binh District, Lang Son Province Mau Son Commune, Loc Binh District, Lang Son ProvinceFounding date: 13 - 12 - 2006