SISTEMA SHYAM TELESERVICES LTD.
Dl-51, Ps Srijen Techpark, Green Building, 9th Floor, Sector-5, Salt Lake,, Kolkata - 700080, West Bengal, India
3rd Floor, Fb-50, Rajdanga Main Road, Narkal Bagan,, Kolkata - 700107, West Bengal, India
19/6 New Alipur, , Kolkata - 700053, West Bengal, India
40, Mirza Ghalib Street, Dist-,, Kolkata - 700016, West Bengal, India
Plot No-389/1, Prince Anwar Shah Road,, Kolkata - 700068, West Bengal, India
1, Crooked Lane,, Kolkata - 700069, West Bengal, India