Blew my mind when I learned that, too, TOX..... One of these days I'm going to have to get into a boat plant and see the entire process first hand!
I kinda had a feeling that it might be someone like 3M or DuPont, Mac..... But, on the other hand, I didn't know how big the total market was for such a product and thought that, if it were limited enough, it might not prove to be profitable for a very large enterprise to get into.....
Enquiring minds..... :^)