On a UK level, the Department for Industry and Trade co-ordinated Project DEFEND initiative has identified 65 sub-sectors where supply chain resilience is critical to the UK.
Ar lefel y DU, mae menter DEFEND, prosiect cydgysylltiedig yr Adran Diwydiant a Masnach, wedi nodi 65 o is-sectorau lle mae cadwyni cyflenwi cydnerth yn hanfodol i'r DU.