This is actually my second purchase of these toner cartridges. I can say with certainty that they are absolutely as good as expensive factory parts after a full year of use. I placed this second order to have spares on hand as I type quite a bit. I have a Samsung C430 color laser printer. I like it, but the toner cartridge that comes with it doesn't last very long. I was unpleasantly surprised to find that a complete set of 4 cartridges from Samsung costs well over $200. This has allowed me to look for cheaper cartridges that: 1. won't ruin my printer; 2. Don't give me error codes; and 3. Print as good as original factory cartridges. After a full year of use I can confirm that they perform absolutely as well as the factory originals and give me no problems. They also last a lot longer. I've typed a lot and still have at least 30% yield left on each cartridge. I placed this second order so I would have an extra set that I know works with no issues.
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