Hoi Lien Hiep Phu Nu Huyen Bac Yen Address: TK 3, Bac Yen Town, Bac Yen Town, Bac Yen District, Son La Province Enterprise code: 5500480554 Phone: 02123860140 Bac Yen Town, Bac Yen District, Son La ProvinceFounding date: 11 - 6 - 2013