Song Da 5 Joint Stock Company Address: It Ong, Muong La District, Son La Province Enterprise code: 5500363307 Phone: 02123831342 Representative: Vu Khac Tiep Adress: It Ong, Muong La, Son La Province It Ong Town, Muong La District, Son La ProvinceFounding date: 23 - 4 - 2009