Trung Tam Dan So - Ke Hoach Hoa Gia Dinh Huyen Yen Chau Address: TK 3, Yen Chau Town, Yen Chau District, Son La Province Enterprise code: 5500462523 Phone: 02123840214 Yen Chau Town, Yen Chau District, Son La ProvinceFounding date: 5 - 7 - 2012