Hop Tac Xa Dong Sia On Oc Address: On Oc Hamlet, Muong Lum Commune, Yen Chau District, Son La Province Enterprise code: 5500640744 Phone: 0973006503 Representative: Thao A Chai Muong Lum Commune, Yen Chau District, Son La ProvinceFounding date: 27 - 10 - 2021