Dau Tu Cong Nghe Quang An Joint Stock Company Address: No 4, Civil Group 5, Khu 2, Ha Lam Ward, Ha Long City, Quang Ninh Province Enterprise code: 5701897475 Phone: 02033812070 Representative: Hoang Viet Bang Ha Lam Ward, Ha Long City, Quang Ninh ProvinceFounding date: 28 - 9 - 2017