Compatible Printer:NEC MultiWriter-7700C;Page Yield(A4,5%):K:40K,C/M/Y:40K;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/T ,L/C,Wester