O To Huong Thu Joint Stock Company Address: Civil Group 5, Khu 6, Hong Hai Ward, Ha Long City, Quang Ninh Province Enterprise code: 5700760728 Phone: 02033818001 Representative: Ha Dong Thu Adress: Civil Group 12, Khu 6, Hong Hai Ward, Ha Long City, Quang Ninh Province Hong Hai Ward, Ha Long City, Quang Ninh ProvinceFounding date: 30 - 1 - 2008