Not Kobe beef.
“Suspect Metal Rattles Car Makers,” The Wall Street Journal, October 12, 2017 B1. A supplier (Kobe Steel) falsifies some of its product-quality paperwork. Result: manufacturers of planes, trains, and cars (and others) need to check that the faulty material doesn’t compromise safety.
How valuable is the information you get from your vendors? How accurate is it? Do you verify?