Colorunion is a global market leader in the field of wholesale toner cartridge. Colorunion has created a number of successful series, and toner cartridge for hp printer is one of them. Featuring high luminous efficiency and long lifespan, Colorunion black toner cartridge is developed by our R&D team who has spent a lot of time improving its luminous performance. This product will definitely save people money as it requires less maintenance. It does burn easily and suddenly stops working.
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