They are not the only manufacturer. From the article: > Prestige Ameritech, the largest full-line domestic surgical mask manufacturer, was producing 600,000 ma

They are not the only manufacturer. From the article: > Prestige Ameritech, the largest full-line domestic surgical mask manufacturer, was producing 600,000 masks each day but struggling to meet demand. Even if it’s true that they’re the single-largest manufacturer, they’re definitely not the only one.