Social Obligation Modern society is the foundation for prosperous corporations. Viettel is dedicated to reinvesting in society by means of linking output and enterprise pursuits with social activities.Gi?y phép b?u chính V?n ba?n xa?c nh?n thông ba?o hoa?t ??ng b?u chi?nh THÔNG TIN LIÊN H?2016: Nhà cung c?p d?ch v? vi?n thông t?t nh?t th? gi