Chau Khang An Joint Stock Company Address: No 51, Cach Mang Thang Tam Street, Civil Group 6, To Hieu Ward, Son La City, Son La Province Enterprise code: 5500426973 Phone: 02123854562 Representative: Vu Ngoc Chau Adress: Civil Group 9, Chieng Le Ward, Son La City, Son La Province To Hieu Ward, Son La City, Son La ProvinceFounding date: 19 - 7 - 2011