- Viettel Printing Factory - Viettel Group
- Address:Duy Tan
- AIR TRAFFIC TECHNICAL COMPANY LIMITED (ATTECH)
- Address:5/200 Nguyen Son-Bo De Ward-Long Bien District
- NhatNam Ltd, .
- Address:Dien Bien Phu, Ha Noi, Ha Noi, Vietnam
- IQLINKS
- Address:3rd Floor, 36 Hoang Cau Str. , Dong Da Dist.
- TAN LONG A INVESTMENT & DEVELOPMENT
- Address:NGUYEN DINH CHIEU, DAKAO, Vietnam
- A Chau Telecom
- Address:92K Nguyen Thai Son, HCM, Vietnam, Vietnam
- CINTIMEX., JSC
- Address:130B/128 Hoang Van Thai, Khuong Mai, Thanh Xuan, Hanoi, Vietnam
- CEEDON PHONES LTD
- Address:351 cau giay, Ha noi, Other, Vietnam
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