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Under the outbreak, foreign media began to question: why don't the richest countries in the world have enough masks? 

Farhad manjo, a columnist of the New York Times, takes the United States as an example to analyze. 20 years ago, most of the protective equipment used in hospitals were produced in the United States, but like many other industries such as clothing and consumer products, the production of masks has almost all shifted to overseas. Among them, China produces 80% of the world's masks. 

Finally, the author blames the rise of overseas low-cost manufacturing and its inevitable attraction, as well as a series of strategic failures of vulnerability caused by the failure to seriously consider the motivation of cost reduction from the perspective of national level and health industry.