Ong Mat Cao Nguyen Na San LTD Address: Hamlet 7, Chieng Mung Commune, Mai Son District, Son La Province Enterprise code: 5500582475 Phone: 0984573086 Representative: Trieu Viet Phuong Chieng Mung Commune, Mai Son District, Son La ProvinceFounding date: 22 - 4 - 2019