**From HP**

---Date of Manufacture on Packaging

The date of manufacture on the toner cartridge box is intended for HP internal processes and may be required to comply with regulatory standards in certain countries. The date of manufacture is not an expiration or “use before” date. There is no expiration date for the use of HP toner cartridges.

Toner vs. Inkjet Shelf Life

Toner cartridges use dry powder rather than liquid ink, so they do not dry out. Unopened toner can last for years under proper storage conditions. Inkjet cartridge shelf life is shorter (18–24 months) and varies by ink type—pigment-based inks are generally more stable than dye-based inks. - - -

The product is a set of four genuine HP color laserjet toner cartridges in cyan, yellow, magenta, and black, specifically designed for use with the HP Color LaserJet CP3525 and CM3530 printers.