Askib Engineers Private Limited
No. 86- D, Dr. Suresh Sarkar Road, Moulali
Kolkata- 700014, West Bengal (India)
Castro Engineering Pvt. Ltd.
W Road, Shanpur(Shibtala) , Dasnagar
Howrah- 711105, West Bengal (India)
RaRiA Scientific Instrument Company
No. 114- B, C. R. Avenue Near Calcutta Medical College
Kolkata- 700073, West Bengal (India)
Western Electric Corporation
No. 35, Ezra Street, Ground Floor Shop No. 4
Kolkata- 700001, West Bengal (India)