We are sorry If your prints don't look right when you're using our product.
Please contact our customer service, and they'll solve the issue for you.
Remember, it's better to use all the toners together, because they might
be a little different when you apply cartridges from different third party
If you have printing problems, take pictures of the poor prints and the
barcode on the toner. Then, call customer service, and they'll help you