... .Have our own factory 4.Yield:BK:5500p/6000p CE400 color toner cartridge Compatible HP Laserjet 551/500 Modle CE400,CE401,CE402,CE403Color BK ... once confirmed by both of buyer and seller.4.All brand names and trademarks are the properties of their respective holders ... and bulk pack, private package as per customer request, CM brand box, and protective air-bubble bag.Specification:Mitsubishi OPC drumNew ...