Unique Instruments Corporation
No. 41, B. B. Ganguly Street, Near Central Metro Station
Kolkata- 700012, West Bengal (India)
S.D. Hardson Company
No. 106/B, Raja Denindra Street
Kolkata- 700004, West Bengal (India)
N. A. Instruments & Equipments
25/1, Jogendra Basak Road,
Kolkata- 700036, West Bengal (India)
Instruments & Controls
No. 21B, R. G. Kar Road
Kolkata- 700004, West Bengal (India)
Simeco
No. 35-B, S. P. Mukherjee Road, 1st Floor
Kolkata- 700025, West Bengal (India)
D. S. Associates
No. 13- A, Kashi Nath, Mullick Lane, 1st Floor
Kolkata- 700073, West Bengal (India)