BONADUZ, Switzerland—A small village in the Swiss Alps is ground zero in the fight against the spread of the coronavirus. Assemblers at a factory owned by Hamilton Medical AG are working around the clock to mass-produce ventilators.

According to a recent ABC News report, the factory typically makes 15,000 devices a year. But, Hamilton Medical has ramped up production by 40 percent to meet unprecedented global demand.

The machines are used in many countries around the world, except the United States. However, Hamilton Medical is seeking approval from the U.S. Food and Drug Administration for “emergency use authorization.”

Each ventilator takes approximately 45 minutes to build. Employees start with the framework, adding components as they walk it down an assembly line about the length of a bowling alley.