I'd be surprised if that worked at all. At least one Chinese ecommerce website is preventing foreign IPs from even viewing item listings for masks. When you try to view the item from the search results, it gives you an error saying something like export is prohibited.

Also China has pretty much shut down air travel to the country to prevent "imported cases," so air freight capacity from is greatly reduced: https://www.nytimes.com/2020/03/26/world/asia/china-virus-tr...:

> The halt to almost all international passenger flights in and out of China will make it even harder for other countries to import N95 respirators, disposable surgical masks and other personal protection gear from China for their own doctors and nurses. About half the world’s airfreight typically moves in the bellies of passenger aircraft, while the rest travels aboard air freighters.

> Previous, large-scale cancellations of passenger air services to China have already created an acute shortage of air cargo capacity over the past two weeks.