Surya Engineering Co.
2, Dr. R. N. Tagore Road, Dunlop & Dakhineshwar
Kolkata- 700076, West Bengal (India)
Ramkrishna Engineering Works
No. 29/3, S. N. Roy Road
Kolkata- 700038, West Bengal (India)
Somatronics
No. 22/1 D, Mohan Chand Road, Khidder Pore
Kolkata- 700023, West Bengal (India)
Eastern Webtech
N-220 ,mudialy Road, 2nd Floor, Gerden Reach
Kolkata- 700024, West Bengal (India)