Natura has refused to answer about who they use. To me that means Trouw.
Gee, why does that not suprise me? I suppose there are quite a few companies that are refusing to answer.
They are hiding under the "proprietary" umbrella once again.
Personally, if you refuse to disclose that info, chances are you're using Trouw.
No matter who a pfc uses, my guess is that most all of it is MIC anyway. Most of our vits are no longer made/manufactured here. That also gives me a warm, fuzzy feeling (as in nauseous). You know pf vits come from China so I have to pray a lot as I add those into every meal for the pooch.