Reference pages.
Because "it depends" is not a specification.
A sourcing partner that will not put numbers on minimums, tolerances, lead times and tests is asking you to buy on trust. We would rather you buy on evidence — and use the same pages to hold us to it. If a figure here does not match what you were told elsewhere, ask why; one of the two answers is wrong, and it is worth knowing which before production starts.
Send a brief — we quote against these standards.
Format, quantity, target look and timeline. Within 24 hours you get options, indicative FOB pricing and the QC plan for your components.