Advance Telecom
Priyasha Manor Apartment AB 65, Prafullakanan West
Kolkata- 700101, West Bengal (India)
Caltronix
12, India Exchange Place Jute House, 3rd Floor
Kolkata- 700001, West Bengal (India)
Lynx Communications And Services
130 Bangur Avenue, Block-C 4th Floor
Kolkata- 700055, West Bengal (India)
Toshniwal Enterprises Controls Private Limited
31, Ganesh Chandra Avenue 4th Floor
Kolkata- 700013, West Bengal (India)
Ortel Communication
No. 36- 1, Ishaque Sardar Road
Kolkata- 743135, West Bengal (India)
DD Group
DD House, P-32, Kasba Industrial Estate, Phase-1
Kolkata- 700107, West Bengal (India)