[coverband]

If one assumes that those 3M strips are authentic branding... I haven't come across a single tape that offered the expected brand quality.

[pjbk]

When I visited China some years ago "3N" was also popular. Same logo font and color, but at least they tried to avoid blatantly infringing the genuine brand.

[greggyb]

I imagine most courts in the US would, in fact, find “3N” as blatantly infringing the 3M trademark.