This product is a compatible black toner cartridge for HP LaserJet printers, specifically the MFP M428 and M404 series. It is manufactured by GREENCYCLE in China and comes with a 3-year manufacturer warranty. The toner cartridge is designed to work with a variety of HP LaserJet printers, including the MFP M428dw, M428fdn, M428fdw, and the HP LaserJet Pro M404n, M404dn, and M404dw. The cartridge uses laser print technology and comes with a chip for easy installation. The unit quantity can be adjusted based on the customer's needs.