Tender For corrigendum : providing of annual maintenance service - desktops, laptops and peripherals - all in one pc; hp,annual maintenance service - desktops, laptops and peripherals - desktop pc; acer,annual maintenance service - desktops, laptops and peripherals - printer ( monochrome , laser , separate drum and tonner ); konica minolta,annual maintenance service - desktops, laptops and peripherals - printer ( ink jet , mono and colour, mid range ); epson,annual maintenance service - desktops, laptops and peripherals - printer ( ink jet , mono and colour, mid range ); canon,annual maintenance service - desktops, laptops and peripherals - multifunction printer ( monochrome , laser , separate drum & tonner, mid range); brother,annual maintenance service - desktops, laptops and peripherals - barcodereader; tvs electronics,annual maintenance service - desktops, laptops and peripherals - barcode printer; tvs electronics,annual maintenance service - desktops, laptops and peripherals - dot matrix printer mid range speed; tvs electroni