... printer parts and consumables: like toner cartridge, OPC drum, magnetic roller, PCR, fuser film sleeve, wiper/doctor blade, fuser ... , Mutual Benefit, Never-ending Service 1. Toner cartridge, we use high quality OPC, Blades, PCR, MAG ROLLER, SCC chip, Korea toner ... to fill black toner cartridge, use Mistubishi toner to fill color toner cartridge. High quality as Original! 2. Three times testing ...