Roshan Telecom
P- 36, Radha Bazar Market, Indian Exchange Place
Kolkata- 700001, West Bengal (India)
Sanjh Phoenix
Chandigarh Main Road, Madhyamgram
Kolkata- 700130, West Bengal (India)
AZad Electronics
No. 4A, Dent Mission Road, 2nd Floor, Near Fancy Market, Khidderpore
Kolkata- 700023, West Bengal (India)
C2K Communication Hongkong Limited
No. 188, Sector A, Metropolitan Chingrihata, 3rd Floor
Kolkata- 700105, West Bengal (India)