VTT Address: No 234, Chu Van Thinh Street, Civil Group 11, Chieng Le Ward, Son La City, Son La Province Enterprise code: 5500375422 Phone: 0978247929 Representative: Truong Thi Thuy Adress: Civil Group 7, To Hieu Ward, Son La City, Son La Province Chieng Le Ward, Son La City, Son La ProvinceFounding date: 14 - 7 - 2009