United National Scientific Co.
No. 16/1- B, Prankrishan Mukharjee Road, Near Tala Post Office
Kolkata- 700002, West Bengal (India)
IIC Industrial Corporation
304, Mahamayatala
Kolkata- 700084, West Bengal (India)
RaRiA Scientific Instrument Company
No. 114- B, C. R. Avenue Near Calcutta Medical College
Kolkata- 700073, West Bengal (India)