... spare parts,fuser gear,presure roller,idler roller,roller tray,ink tube system,traling cable,registration assembly,swing plate,dulexer,maintance ... ,clutch gear,fuser cover,transfer roller,laser scanner,hard disc,ink supply staton and so on.Models asHP1000sseries,2100series,3000series,4000series ... them.please do not hesitate to contact to us. Toner cartridge chip used for Fuji Xerox WC-3550