bids are invited for annual maintenance service - desktops, laptops and peripherals - linux host pc server; wipro , annual maintenance service - desktops, laptops and peripherals - linux standalone desktop; wipro , annual maintenance service - desktops, laptops and peripherals - n computing desktop; wipro , annual maintenance service - desktops, laptops and peripherals - desktop pc; wipro acer lenovo hp dell , annual maintenance service - desktops, laptops and peripherals - printer ( ink jet , mono and colour, mid range ) ; hp , annual maintenance service - desktops, laptops and peripherals - plasma tv; samsung , annual maintenance service - desktops, laptops and peripherals - video conference device; polycom , annual maintenance service - desktops, laptops and peripherals - nodes i o boxes ports; dax , annual maintenance service - desktops, laptops and peripherals - network switch wsc3750g; cisco , annual maintenance service - desktops, laptops and peripherals - network switch ws c2960 24tc; cisco , annual maintenance service - desktops, laptops and peripherals - ups ( online 3 kva ) ; emerson , annual maintenance service - desktops, laptops and peripherals - ups 1 kva; apc , annual maintenance service - desktops, laptops and peripherals - ups ( online 2 kva ) ; apc emerson , annual maintenance service - desktops, laptops and peripherals - ups ( offline 600-650 va ) ; numeric foxin zebronics hykon , annual maintenance service - desktops, laptops and peripherals - laptop; hp , annual maintenance service - desktops, laptops and peripherals - all in one pc; hp lenovo acer kbs , annual maintenance service - desktops, laptops and peripherals - ups ( offline 700 va ) ; bpe microtech zebronics numeric foxin , annual maintenance service - desktops, laptops and peripherals - printer ( monochrome , laser , composite cartridge ) ; canon lexmark epson brother hp , annual maintenance service - desktops, laptops and peripherals - desktop pc; hp acer , annual maintenance service - desktops, laptops and peripherals - tubular batteries refilling and maintananace; hykon luminous exide amron , annual maintenance service - desktops, laptops and peripherals - all in one pc after warranty; hlbs , annual maintenance service - desktops, laptops and peripherals - ups 600 va after warranty; uniline , annual maintenance service - desktops, laptops and peripherals - laser printer after warranty; canon epson lexmark brother , annual maintenance service - desktops, laptops and peripherals - ups 3 kva after warranty; hykon , annual maintenance service - desktops, laptops and peripherals - ups 1 kva after warranty; hykon index , annual maintenance service - desktops, laptops and peripherals - 5 kva ups after warranty; perpetual , annual maintenance service - desktops, laptops and peripherals - network switch sg350x after warranty; cisco , annual maintenance service - desktops, laptops and peripherals - network switch dgs1016 ds1024; dlink , annual maintenance service - desktops, laptops and peripherals - resident engineers; diploma holders