Quotient Engineering, Inc. Calcutta, India
Infinity Think Tank, Tower I Plot A3, Block Gp, Sector V, Salt Lake
Kolkata- 700091, West Bengal (India)
Vision Gupta And Sur Engg. Co. (P) Ltd.
3/2, Dr.Suresh Sarkar Road
Kolkata- 700014, West Bengal (India)
Master Electrical Works
No. 26, Canal East Road
Kolkata- 700054, West Bengal (India)