Duplicate contents dilemma

We run a webshop which sells packaging machines and materials, my problem is some of our products exist on different categories within our site. For example; a wrapping film is included in the Wrapping Machines and Films category as well in the Packaging Materials category for obvious logical reasons. We use a tool called seomoz and it flags these products as duplicate contents. Would Google penalize our site for having such a structure?

See original post by RyanWasHere