Duy An LS LTD Address: Hoang Tan Hamlet, Hoang Dong Commune, Lang Son City, Lang Son Province Enterprise code: 4900888219 Phone: (0256) 6208968 Representative: Nong Thi Thao Adress: Na Mum Hamlet, Mai Sao Commune, Chi Lang District, Lang Son Province Hoang Dong Commune, Lang Son City, Lang Son ProvinceFounding date: 28 - 6 - 2022