Hieu Son Joint Stock Company Address: Civil Group 13, Khu 6, Ha Tu Ward, Ha Tu Ward, Ha Long City, Quang Ninh Province Enterprise code: 5700631881 Phone: 0203830037 Representative: Truong Xuan Truong Adress: Civil Group 4, Khu 3, Yet Kieu Ward, Ha Long City, Quang Ninh Province Ha Tu Ward, Ha Long City, Quang Ninh ProvinceFounding date: 26 - 1 - 2007