Thuong Mai Duy Khanh Joint Stock Company Address: Le Duan Street, Civil Group 4, Chieng Sinh Ward, Son La City, Son La Province Enterprise code: 5500316610 Phone: 0212874208 Representative: Dao Duy Khanh Adress: Na Ha 2 Hamlet, Chieng Mung Commune, Mai Son District, Son La Province Chieng Sinh Ward, Son La City, Son La ProvinceFounding date: 15 - 7 - 2008