Look at the Whole System.
FDA describes manufacturing controls in terms that include personnel hygiene, sanitary operations, equipment, and production processes. Dietary supplements have their own current good manufacturing practice requirements under 21 CFR Part 111. The appearance of a room is only one visible part of that context. [Source]
Consistency Needs a Written Reference.
FDA’s supplement guidance distinguishes the planned manufacturing instructions from the record of what happened during a specific batch. This makes production a documented sequence, rather than a collection of separate actions. [Source]
Match a Claim to Its Scope.
When a website mentions a manufacturing standard, ask which facility, activity, or product the information covers. A statement about a factory and a statement about a finished formula are different things. Reading the scope is more useful than judging the size of a badge.
Make Your Question Specific.
Try: “What manufacturing information can you share for this product, and what exactly does it cover?” If a document is provided, read its title and the named organization before drawing a conclusion.
Think in terms of a documented process: people, equipment, instructions, and records.