2012: Nhà cung c?p d?ch v? vi?n thông t?t nh?t th? gi?i t?i các th? tr??ng ?ang phát tri?n – WCA.You might be using a browser that won't supported by Fb, so we've redirected you to an easier version to provde the finest expertise.Viettel Group is really a Vietnamese company winner. Not only Vietnam’s biggest telco, but one of several fastes