Sorry if this is a naive question, I don't work in supply chain, but do companies usually know the suppliers of their direct supplier? Or have ways to manage th

Sorry if this is a naive question, I don't work in supply chain, but do companies usually know the suppliers of their direct supplier? Or have ways to manage that kind of indirect risks ? Because if you move your factory from China to Mexico, but some parts of your Mexico factory are still sourced from China, you have only masked the problem.