dear sir. shenzhen print media co.,ltd innovate c79cx5900/r270 ink cartridge with ourselves mould .oem package.our company basic on the best quality first.and the more the cheaper.and also we can supply competitive price of ciss. the ink cartridge type for c79 /cx3900/cx4900/cx5900 ciss ,t0731,t0732,t0733,t0734 the ink cartridge type for r270 ciss,t0821,t0822,t0823,t0824,t0825.t0826. miss.jasmine emsil:inkmedia@szprintmedia.com msn:inkmedia88@hotmail.com