Unique Instruments Corporation
No. 41, B. B. Ganguly Street, Near Central Metro Station
Kolkata- 700012, West Bengal (India)
East Coast Enterprisers Limited
No. 33, Brabourne Road, 6th Floor
Kolkata- 700001, West Bengal (India)
Young Graduate & Company
No. 126/C, Lenin Sarani
Kolkata- 700013, West Bengal (India)
Kaliji Engineering Works
No. 13/A/9, Ariff Road
Kolkata- 700067, West Bengal (India)