Truong Mam Non Xa Ngoc Linh Address: Khuoi Vai Hamlet, Ngoc Linh Commune, Vi Xuyen District, Ha Giang Province Enterprise code: 5100266669 Phone: 02193506206 Ngoc Linh Commune, Vi Xuyen District, Ha Giang ProvinceFounding date: 17 - 3 - 2009