Why is my company paying a rabbi to certify our chemical reactors?

I work in the chemical industry, and my site makes no chemicals for use in food or food preparation. We are under no FDA regulations. The closest to food we get is active ingredients in dishwashing detergent and a surfactant used to bond paint to aluminum (soft drink cans). It’s possible there’s a product used to bond non-stick coatings to metal, but if so, I haven’t seen sales to a customer that would use it in that fashion.

But…on a regular basis a rabbi gets paid to come by and certify us, increasing our overhead.

Can anyone explain the logic here?

And if it’s not actually a requirement, provide a reference so I can eliminate this cost?

Edit: Putting this here since a few people asked. The practice predates current sales and product managers, and there’s no documentation we can find as to why. They’re extremely cautious and don’t even want to bring it up to customers. I searched online and what I found said for our product line there isn’t a real requirement.

After reading comments and thinking more, I am also considering it going back to retired products. That will be hard to establish though.