A checklist is more useful than a vague promise.
Describe what needs to be checked for the item and intended use. Makeery coordinates quality requirements within the agreed scope; no universal zero-defect guarantee is made.
Keep corrections connected to the source.
When a sample or file needs a change, record the decision and its version. The reference should remain clear for everyone handling the order.
Ask for product-specific evidence when needed.
State any required testing or documentation in the brief. Applicability needs to be checked for the actual item and destination.