@GainOfDystopia @LazarusLong13 @SteverRobbins I suspect there is leakage in those devices. The filter itself probably meets standards but air going through the box may not. But does it matter if you're filtering a room? It's not a PAPR.
@GainOfDystopia @LazarusLong13 @SteverRobbins 我怀疑这些设备有泄漏。过滤器本身可能符合标准，但通过盒子的空气可能不符合标准。但是，如果您要过滤房间，这有关系吗？这不是 PAPR。