i discovered a strange mini black wires on ear plugs (video)

Hello,

i have found suspicious micro wires on ear plugs i just bought in my country in Europe.
Made in china obviously, like almost everything.
I just looked with jeweler's loupe on it, before the use, and i discovered them.
I bought quite a few pairs, and these black micro wires are on every pair i opened so far.
Sometimes theres just a dot, or short wire.

I opened a 3rd pair and the one here is really big.

here's a photos:
https://imgur.com/a/8ex7fCp

and a video:
https://rumble.com/v289sd7-be-aware-strange-mini-black-wires-on-ear-plugs-zoom-x20.html

This one is really big, but theres some short, and very short a like black wires all over these ear plugs.

I would like to ask, what i can do with it?
its not magnetic in room temperature.
And i did not observed its self moving on sight.
(yet after night im not sure if some wires changed position, or it was me who blown it away)

Do You have any ideas what experiments i can do with it?
To put in what chemical substance?
To put in microwave?
To heat up to 700 celsius with gas burner?