Xay Dung Hoang Mai Address: Phieng Ban Ii, Bac Yen Town, Bac Yen District, Son La Province Enterprise code: 5500214094 Phone: 02123861477 Representative: Tran Ngoc Chuc Adress: Moi Gia Phu Street, Phu Yen District, Son La Province Bac Yen Town, Bac Yen District, Son La ProvinceFounding date: 19 - 11 - 2003