Polyurethane (PU) products and the industry

I’m skeptical about whether companies are indeed creating their own compounds. Their own molds and shapes, pigmentation and logos, sure. But don’t they still have to buy it in liquid form from somewhere?
So, I started a thread on a forum and I got into a rather interesting conversation with user Zip, which I reproduce here. Continue reading Polyurethane (PU) products and the industry