THEY ARE PRODUCED BY A DIFFERENT SUPPLIER THAN THE 'NON ECO' SERIES. 12 MONTH WARRANTY!Compatible Printers: HP LASERJET COLOR CP3525N, CP3525DN, CP3525X, CM 3530 FS, CM3530MFPCANON LBP 7750. CE253A MAGENTA ECO SERIES COMPATIBLE TONER FOR HP Laserjet Color CP 3525N, CP 3525 CE253A CE253 723M.
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