MOEI & Fans in Office Building at Nizam Palace, Kolkata- 700 020. ( S. H.:- Providing Services of Man Power for Day to Day Operation & Maintenance of CCTV, Intercom System, DTH Set Top Box, Public Evacution System, Visual Display System and Intercom, LAN, PA System, Bio- Metric etc. Installed in All Offices and Buildings of CPWD in Nizam Palace Campus, Nizam Palace, Kolkata- 20. )