Hop Tac Xa Hoang Hai Address: Khoi 3, Muong Ang Town, Muong Ang District, Dien Bien Province Enterprise code: 5600211869 Phone: 02153503003 Representative: Dao Xuan Kha Adress: Khoi 3, Muong Ang Town, Muong Ang District, Dien Bien Province Muong Ang Town, Muong Ang District, Dien Bien ProvinceFounding date: 8 - 1 - 2010