I love to help importers define their product requirements in details. Engineers working on new product developments call it a “product quality manual”. In the quality assurance industry, we call it a “QC inspection checklist”.
I have guided a few importers down this path, and I have identified a clear method to prepare such a document:
We also prepared it in pdf format: How_to_prepare_an_inspection_checklist.
And you can see this other illustration showing examples of inspection checkpoints.