A. K. Engineers
No. 21/27, Canal East Road
Kolkata- 700067, West Bengal (India)
Spectrum Enterprises
No. 4/4 A, Ram Mohan Mullick Garden Lane, Beliaghata
Kolkata- 700010, West Bengal (India)
Sienna
No. 414 B, Jodhpur Park
Kolkata- 700068, West Bengal (India)
Interface
53, M. R. Chowdhury Road ( North Range) 2nd Floor
Kolkata- 110092, West Bengal (India)