Precision Electro Instrumentation India Private Limited
No. 6, Ground Floor, Wood Street
Kolkata- 700016, West Bengal (India)
Castro Engineering Pvt. Ltd.
W Road, Shanpur(Shibtala) , Dasnagar
Howrah- 711105, West Bengal (India)
Unique Instruments Corporation
No. 41, B. B. Ganguly Street, Near Central Metro Station
Kolkata- 700012, West Bengal (India)
SKM Geotech
No. 30- A, Canal East Road
Kolkata- 700011, West Bengal (India)