
Four cartridges arrived well packaged and showed no signs of toner leakage. Installation was quick and easy and the printer, in my case the Canon mf634cdw, seems to handle them just like genuine Canon cartridges. There are no warnings about using third-party products and new toner levels are displayed correctly. As many other reviewers have pointed out, they make a relatively loud "clatter" when printing. It's a little annoying but the seller assured me it wouldn't ruin anything. Print quality appears to be as good as genuine Canon toner.

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