A material callout needs more than a brandA grade is orderable when its construction, alternatives and evidence requirements are clear.A material callout needs more than a brandKeep the exact construction with the approved drawing revisionIdentitySupplier + grade + data-sheet revision.ConstructionCore / bond material + thickness + copper foil.Property contextMethod, conditions and typical or guaranteed basis.AlternativesNamed options and explicit approval route.EvidenceTraceability and agreed verification requirements.³Ô¹Ïtv · Engineering explanation · Conceptual, not to scale