Ok, so they have a copyright or patent on the item.
Unless they give you specific permission in writing that says you are an authorized seller, it is my understanding that you may not sell those items on Amazon.com.
That said, it does not mean you cannot sell them elsewhere, like on the bay…
However, THIS ASIN is still not valid… When you go to amazon home page search, it brings up no results. So this may mean they have deleted the catalog page entirely.
The “additional” part refers to continuing to sell items held in ownership by this manufacturer. You do not need to anger them again. They can have you suspended if they keep reporting you are selling their things without permission.