display product categories

I use hikashop as catalog. I have some products that belongs to multiple categories, how i can list all the categories that this product belong in the product page?

There is no option for that. You would have to edit the file "show" of the view "product" via the menu Display->Views and add some cod to display the categories.

It should be too complex. Something like that:

foreach($this->categories as $category){ echo $category->category_name.'<br/>'; }