Ngoc Trai Address: No 85B, Nguyen Thai Hoc Street, Civil Group 16, Minh Khai Ward, Ha Giang City, Ha Giang Province Enterprise code: 5100178620 Phone: 0219862797 Representative: Nguyen Duy Hung Adress: Civil Group 27, Minh Khai Ward, Ha Giang City, Ha Giang Province Minh Khai Ward, Ha Giang City, Ha Giang ProvinceFounding date: 28 - 3 - 2005