Bids Are Invited For Annual Maintenance Service - Desktops, Laptops And Peripherals - Desktop Pc; Acer , Annual Maintenance Service - Desktops, Laptops And Peripherals - Desktop Pc; Sis , Annual Maintenance Service - Desktops, Laptops And Peripherals - All In One Pc; Lenovo , Annual Maintenance Service - Desktops, Laptops And Peripherals - All In One Pc; Dell , Annual Maintenance Service - Desktops, Laptops And Peripherals - Printer ( Monochrome , Laser , Composite Cartridge ) ; Hp , Annual Maintenance Service - Desktops, Laptops And Peripherals - Printer ( Monochrome , Laser , Composite Cartridge ) ; Canon , Annual Maintenance Service - Desktops, Laptops And Peripherals - Printer ( Monochrome , Laser , Composite Cartridge ) ; Samsung , Annual Maintenance Service - Desktops, Laptops And Peripherals - Printer ( Monochrome , Laser , Separate Drum And Tonner ) ; Hp , Annual Maintenance Service - Desktops, Laptops And Peripherals - Printer ( Monochrome , Laser , Separate Drum And Tonner ) ; Samsung , Annual Maintenance Service - Desktops, Laptops And Peripherals - Printer ( Ink Jet , Mono And Colour, Mid Range ) ; Hp , Annual Maintenance Service - Desktops, Laptops And Peripherals - Multifunction Printer ( Monochrome , Laser , Composite Cartridge, Lower Range; Hp , Annual Maintenance Service - Desktops, Laptops And Peripherals - Multi-Function Printer ( Colour , Laser , Composite Cartridge, Lower Range ) ; Ricoh , Annual Maintenance Service - Desktops, Laptops And Peripherals - Multifunction Printer ( Monochrome , Laser , Separate Drum & Tonner, Mid Range ) ; Hp