TIPP: Achatinas can produce organic Polymer. You can just craft a fridge with the organic Polymer and destroy it. Every time you destroy a fridge you get normal Polymer back but you will only get half the materials it costed to make it so if you like wasting 60 metal ingots in exchange for 7 polymer, then do this. That means you can transform organic Polymer to normal Polymer. I found it out yesterday by myself.

(lt also works with organic Oil)