Hoang Ngu Son Joint Stock Company Address: 2 Khu 3 Civil Group, Hong Hai Ward, Ha Long City, Quang Ninh Province Enterprise code: 5701055302 Phone: 0979833166 Representative: Pham Van Hai Adress: Ha Hamlet, Dong Rui Commune, Tien Yen District, Quang Ninh Province Hong Hai Ward, Ha Long City, Quang Ninh ProvinceFounding date: 16 - 2 - 2009