Agreed with you in advance — a general audit and an audit for a regulated product are different jobs.
✓Legal standingRegistration, declared scope of business, administrative permits, capital, legal representative, any restrictions
✓Manufacturing or tradingWhether they make it or buy it from someone who does
✓Equipment and capacityWhat is on the floor, and whether the claimed output is physically possible
✓Quality systemsIncoming material checks, in-line control, final inspection, rejection handling
✓CertificatesTraced to the issuing body and matched to this legal entity, not an affiliate
✓Working conditionsBecause a European buyer is answerable for its supply chain, not only its price
✓Sub-contractingWhether your order will quietly be made somewhere you have never seen
✓DocumentationWhat the factory can actually supply for your import: test reports, declarations, origin