THEY ARE PRODUCED BY A DIFFERENT SUPPLIER THAN THE "NON ECO" SERIES. 12 MONTH WARRANTY!Samsung ML 1910, 1915, 2525, 2525W, 2580N, SCX 4600, SF 650, 655R Compatible Printers. BLACK ECO SERIES COMPATIBLE MLT-D1052 TONER FOR SAMSUNG SCX 4600 4623 ML 1910 1915 MLT-D1052L CAPACITY 2,500 PAGES.
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