Ets Intarlaken Technologies
5th Floor, No. 117, BT Road
Kolkata- 700108, West Bengal (India)
RaRiA Scientific Instrument Company
No. 114- B, C. R. Avenue Near Calcutta Medical College
Kolkata- 700073, West Bengal (India)
Techno Trade Engineering Co.
No. 285/B, B. B. Ganguly Street
Kolkata- 700012, West Bengal (India)
Bysakh & Company
No. 55, W. C. Banerjee Street
Kolkata- 700006, West Bengal (India)