Compatible Printer:NEC Color MultiWriter 5850C/NEC 400F;Page Yield(A4,5%):K:6K,C/M/Y:6K;Replacement:1:1 Replace for free;Certification:ISO14001&ISO9001,CE,ROHS,19798,STMC;Quality:A+ Grade;Transportation Terms:DHL/Fedex/TNT/By air /By sea;Payment Terms:T/