The brand? The manufacturer's information? The EAN?

This product interests me a lot, the price is very low
However, I regret the total lack of transparency about the envelopes.
No EAN code, no indication of the manufacturer's name (which seemed mandatory) ...

Desperate to have the manufacturer's product information, I went to the vendor's site amazon, sought the SCR that was not easily found and learned that the site is not a company but a trademark a retail company that sells Yet in quantity up to 10,000 envelopes ... it's very very opaque stuff.

I loved airai more transparency including product quality before ordering