it's bad that you had to "kiss the door" of this interesting place. I'm sure you could show us more about it.
In our time it can be said that "old things" (such as a cozy and clean house in a clean place or the production of natural products) become more valuable.

Flouride in water takes the edge of people, makes them more reluctant, more obedient. A friend of mine, a chemist, also told me that this is the real reason why they put it in toothpaste and drinking water.

I did not know it. Very useful and interesting information. Now I must learn more about this.

Thank you for the information and have a nice day :)