Khang Chi Address: Hong Phong Hamlet, Chien Thang Commune, Bac Son District, Lang Son Province Enterprise code: 4900569526 Phone: 0205628686 Representative: Ke Van Khang Adress: Hong Phong Hamlet, Chien Thang Commune, Bac Son District, Lang Son Province Chien Thang Commune, Bac Son District, Lang Son ProvinceFounding date: 19 - 5 - 2010