Thanks guys,
I actually already knew the answer to the question, but I see a lot of websites ranking high while still using tabs with general information (exactly the same) on similar products.
My website has mainly custom made products so the general information is the same and there are too many products to write it as unique content. I now use a button that leads to a separate page with all the information but somehow I just don't like it. It just looks so much more informative to have all this information on the product page itself without having to go to another page.
If Google really cares about giving as much information as possible, why isn't there a way to have this type of duplicate content?