This article is about high tech stuff. 25 years ago I went to a sports store to buy some hiking boots. ALL the boots from ALL the manufacturers were made in China.
You cannot put an army in the field without boots.
So this chain of supply problem is not just high tech.
This is true. As said above, estimates are that Chinese suppliers make up 70-80 percent of Walmart's merchandise [for example], leaving less than 20 percent for American-made products.