Vien Thong Mang Joint Stock Company Address: No 486, Ha Long Street, Bai Chay Ward, Ha Long City, Quang Ninh Province Enterprise code: 5701375133 Phone: 0983809602 Representative: Trinh Thi Mai Adress: 486, Ha Long Street, Bai Chay Ward, Ha Long City, Quang Ninh Province Bai Chay Ward, Ha Long City, Quang Ninh ProvinceFounding date: 17 - 3 - 2010