Yen Son LTD Address: Civil Group 3, To Hieu Ward, Son La City, Son La Province Enterprise code: 5500298104 Phone: 0212855795 Representative: Tran Nhat Duat Adress: Civil Group 3, To Hieu Ward, Son La City, Son La Province To Hieu Ward, Son La City, Son La ProvinceFounding date: 14 - 1 - 2008