Truong Tieu Hoc Khang Chien Address: Phai Phay, Khang Chien, Trang Dinh District, Lang Son Province Enterprise code: 4900376940 Phone: 02053885001 Representative: Ha Thi Tuoi Adress: Trang Dinh District, Lang Son Province Khang Chien Commune, Trang Dinh District, Lang Son ProvinceFounding date: 5 - 9 - 2009