Xay Dung Ha Tang Vien Thong VTZ Joint Stock Company Address: Civil Group 5, Khu 10, Troi Town, Hoanh Bo District, Quang Ninh Province Enterprise code: 5701828224 Phone: 0978896688 Representative: Tran Xuan Quyet Adress: Civil Group 6, Khu 7, Viet Hung Commune, Ha Long City, Quang Ninh Province Troi Town, Hoanh Bo District, Quang Ninh ProvinceFounding date: 26 - 9 - 2016