Viettel Group, the largest group of company in Vietnam. We have our own telecommunication network and have been listed in the top largest 80 telecommunication network in the world with annual turnover of about USD 4 billion. We, Viettel, have won the prize of the best telecommunication in the emerging countries recently. We have also invested some more telecommunication in other countries. For more information about us, you could find on internet by google engine.