With regards to #3, I found it a bit incongruous that you failed some KN95 masks (like Boncare) for incomplete labeling, while allowing a mask to pass that met a standard that appears to be entirely of their own devising (the Lutema M95i [0]). This seems to be a bit unfair, given that they both performed well in the PFE and breathability tests. It seems like if Boncare decided to call theirs an “MN95” mask, it would have passed too.
0: https://lutema.com/pages/frequently-asked-questions