Page Yield: HP 21XL Black ink tank contains 20ml, yields up to 475 pages per cartridge @ 5% coverage, up to 30% more pages than OEM, low cost for per page. Room of the cartridge is enlarged through secondary improvement, high volume plate suction sponge replaces the original material, to ensure the real high volume. Print Effectiveness: 1.Brilliant results, Smart value. The print effectiveness of SPEED ink cartridge up to 98% effectiveness of the printer's original cartridge. 2.Zero-energy Technology ensures that your professional quality documents remain crisp and smudge free. 3.Experience smudge-resistant professional quality text, produce smooth, crisp, vibrant text and graphics while resisting smudging and fading. 4.Improve light and color automatically, while resisting oxidation and dampResist wastage, inks stop to come out automatically when printing is over. Technology: 1.Print Head Cleaning Technology: protects the printer from being destroyed and polluted. 2.Print Head Testing Machine Technology: adopts Germany chip testing machine, let the cartridge is 100% compatible with printers. 3.Eco Friendly Technology: good flexibility, rejects environmental pollution. 4.Zero-energy Technology: ensures that your professional quality documents remain crisp and smudge free. Prints resist fading for quality that lasts. NOTE: Please lose sight of such as "NO INK" or "It's not the original ink cartridge" on your computer on process of SPEED items using, we make sure that all our cartridges are compatible with your printer. Please Be Assured Use. Please confirm your Printer Model before placing order
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