bids are invited for annual maintenance service - desktops, laptops and peripherals - desktop pc; hp , annual maintenance service - desktops, laptops and peripherals - printer (monochrome , laser , composite cartridge ); hp , annual maintenance service - desktops, laptops and peripherals - ups (offline 600-650 va); numeric , annual maintenance service - photocopier machine - photocopier machine; ricoh; oem authorised service provider , annual maintenance services for water purification and conditioning system (version 2) - water purifier 25 ltr ro; upto 3; package-1 : water purifier and conditioning system maintenance involving basic servicing , annual maintenance services for water purification and conditioning system (version 2) - water purifier 15ltr ro; upto 3; package-1 : water purifier and conditioning system maintenance involving basic servicing , annual maintenance services for water purification and conditioning system (version 2) - water purifier 50 ro; upto 3; package-1 : water purifier and conditioning system maintenance involving basic servicing , annual maintenance services for water purification and conditioning system (version 2) - water dispenser in built fridge; upto 3; package-1 : water purifier and conditioning system maintenance involving basic servicing , amc of integrated security and surveillance system - cctv cameras set of 08 nos; non-comprehensive; hardware; consumables to be provided by service provider (included in the contract cost); defence establishments; control room; depending upon the sys.. , annual maintenance service - epabx system