Caltron
Caltron House, 65, G C Avenue.
Kolkata- 700013, West Bengal (India)
World Neno Tech
Gita New Maket
Kolkata- 700124, West Bengal (India)
Bengal Informatics Private Limited
No. 58D, N. S. Road, Suit No. 602, Ganesh Market,
Kolkata- 700001, West Bengal (India)
Gopal Krishna Electronics
No. 1, Jessore Road, Hatkhola More, Barasat
Kolkata- 700124, West Bengal (India)