We also produce products patented by others, but the appearance has changed, but the product name is theirs. Is this an infringement?

Patent infringement means that the patent characteristics of two products are the same or similar.

The other party's is a design patent (the correct name should be: design patent! ), then his patent right is his appearance, not the technology contained in the product. So as long as the appearance is different, there is no infringement, although the name is the same.

So don't worry, you won't be prosecuted soon.