The hp21 c9351ae black remanufactured ink cartridge by jettec h21 is a jettec branded remanufactured printer ink cartridge for hewlett packard hp printers they provide oem style quality printing but at a fraction of the cost of original hewlett packard hp cartridges jet tec remanufactured inkjet cartridges are made in the united kingdom and are compatible with the latest and most popular types of printers the quality of jettec products is second to none jettec is also an iso 9001 regi