104 recent reviews on Amazon.com were negative. They appear to be suspended. Data updated on .
paierfushi no longer has any products listed for sale, based on this we assume that Amazon.com has taken action and very likely suspended them. Reading most up to date reviews will have more details about customer frustrations.
If you have already placed an order, but since realized that your product is likely never going to come try contacting the seller on Amazon.com. If the seller is not replying, read on what to do if you were scammed.
Ordered Korean KF94 masks. Instead received Chinese KN95 masks. As best I can determine these are not tested or approved by any lab here. Seller wants buyer to pay return shipping to China. Covered by Amazon. Chinese post office unable to deliver return. Still waiting for refund which I suspect will never come. Seller either closed its doors or changed their name and moved. Avoid at all costs.