Duyen Khanh Joint Stock Company Address: No 20, Cach Mang Thang Tam Street, Civil Group 9, Chieng Le Ward, Son La City, Son La Province Enterprise code: 5500461431 Phone: 02123752227 Representative: Bui Tan Duyen Chieng Le Ward, Son La City, Son La ProvinceFounding date: 18 - 6 - 2012