Trung Kien Address: Chieng On Commune, Quynh Nhai District, Son La Province Enterprise code: 5500326263 Phone: 0946096323 Representative: Pham Van Doanh Adress: Chieng On Commune, Quynh Nhai District, Son La Province Chieng On Commune, Quynh Nhai District, Son La ProvinceFounding date: 15 - 9 - 2008