Hoang Long LTD Address: Phieng Ban I, Bac Yen Town, Bac Yen District, Son La Province Enterprise code: 5500296072 Phone: 02123860045 Representative: Tran Sy Hien Adress: Phieng Ban I, Bac Yen Town, Bac Yen District, Son La Province Bac Yen Town, Bac Yen District, Son La ProvinceFounding date: 23 - 11 - 2007