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 7750CDN. CE251A CYAN ECO SERIES COMPATIBLE TONER FOR HP Laserjet Color CP 3525N, CP 3525 D CE251A CE251 723C 7,000 PAGES.
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