Geologists Syndicate Pvt.Ltd.
No. 137, Biplabi Rash Behari Basu Road, Canning Street, 1st. Floor, Room No. - 25
Kolkata- 700001, West Bengal (India)
Petro - Lab Instruments
No. 31, Kedar Nath Banerjee Road, P. O. Ariadaha
Kolkata- 700057, West Bengal (India)
Unique Instruments Corporation
No. 41, B. B. Ganguly Street, Near Central Metro Station
Kolkata- 700012, West Bengal (India)
Surya Instruments
28, Tara Chand Dutta Street, Ground Floor
Kolkata- 700073, West Bengal (India)