This is a replacement cartridge for the Hewlett Packard CF031A 646A cyan laser toner cartridge which is manufactured by LD and is guaranteed to perform with your HP printer. It replaces the original HP CF031A toner cartridge. LD remanufactured replacement CF031A laser toner cartridges are specially engineered to meet the highest standards of quality and reliability you can expect from LD. Our toners have exceptional yields that meet or exceed the OEM Original Equipment Manufacturer page yield for the CF031A. Our remanufactured HP 646A contains up to 85% new parts including wiper blades, OPC drums, and other internal components. While most competitors simply refill the toner cartridge and hope the drum and other key components last, we fully disassemble the toner cartridge and rebuild it to ensure the highest quality prints. High quality LD remanufactured CF031A toner cartridges are an economical and sensible alternative to expensive OEM CF031A HP 646A Hewlett Packard laser toner cartridges and supplies. The use of LD remanufactured replacement laser toner cartridges and supplies does not void your printers warranty. LD remanufactured laser cartridges are not remanufactured by HP. LD Products offers a 100% Quality Satisfaction Guarantee on our LD remanufactured CF031A cyan laser toner cartridges. For use in the following printers Color LaserJet Enterprise CM4540, CM4540f, CM4540fskm.