MSE Remanufactured Extended Yield Toner Cartridge for LJ 9000 9040 9050 (Alternative for HP C8543X 43X) (40000 Yield). Choose quality. MSE offers intelligently re-engineered replacement printing supplies that are top-rated in performance and dealer confidence. An industry leader in technology and innovation MSE affords you a true alternative to the OEM by offering a product with comparable quality and reliability. MSE products are made in the USA and supported by comprehensive dealer marketing programs. 100% customer satisfaction guaranteed with a standard 2-year manufacturer’s warranty. ISO certified.