... produce toner cartridges ,toner chips and toner powder , we have dust-free workshop to confirm each product we produce is of high quality ,we ... Xerox ,Dell, Espon, Lexmark, Minolta ,Kyocera, OKI, Sharp. Lenovo,Tally, Toshiba and so on .Quality description and assurance:Warranty: If any faulty ... and details!---We always carry this constant principle! M236 toner cartridge chip for Sharp AR270 printer