Yep. I own a bakery. My big-name ingredient supplier doesn't carry the flour brands commonly seen in supermarkets, and the same is true in reverse. Likewise, the flour I buy doesn't include the labeling seen with retail products, like a nutritional panel. If I want the detailed information a manufacturer offers I request that from my supplier or the manufacturer. As an example, I was looking into a new source for one ingredient recently (malted barley flour), and the sales representative also gave me all the secondary documents (total of 70 pages):
Food Safety Audit Report
Certificate of Conformity
Material Safety Data Sheet
Certificate of Analysis
Kosher Certification
Technical Data Sheet
Corporate Certificate of Liability Insurance
Product Guarantee
Product Specifications Sheet