Neo Tele-tronix Pvt. Ltd ( Ntpl )
No. 6/7, Bijoygarh
Kolkata- 700032, West Bengal (India)
SPB Engineers (India)
LG-009 & 060, V. I. P. Market, P-187 Scheme VI-M, C. I. T. Road
Kolkata- 700054, West Bengal (India)
Hitech Instruments
53/2, Haridevpur Road
Kolkata- 700082, West Bengal (India)
Sys-Con Engineering
53b,Mirza Galib Street
Kolkata- 700016, West Bengal (India)
Cryogenic Pump & Service
No. 20/16, Seal Lane
Kolkata- 700015, West Bengal (India)