I mean, I understand why they don't like to do this, dealing with the end user is a huge pain, it is much easier to deal with the distributors and have them deal with the end user. So barring direct sales I wish supply chain auditing was easier for for us end users. the best you tend to get is a "distributers" link on the manufacturers website, most of whom are b2b only distribution that are not happy selling low volume directly to you ether.