Brand name: QwenQwen toner cartridges manufactured by certified manufacturer by CE, ISO 9001, ISO14000 and STMCIt always print crisp,clear,legible,and cleanly.Our jobs are providing the premium quality products and professional services to make you satisfield.Model: CRG 719 Black toner cartridgeCompatible with printers:Canon LBP 6300, 6650,MF5850dn, 5880dn, 5930dn, 5950dw, 5870dn printerSimple installation user:Step 1:Gently rock the cartridge back and forth to spread the tonerStep 2:Pull out the entire sealing tape from the toner cartridgeStep 3:Remove the black paperStep 4:Install the toner cartridge into the printerAll the brand names and logos are registered trademarks of their respective owners. These products are NON-OEM.