I see this on window on my panamera and I wonder what is this?
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If you are talking about the triangle: that’s the „Porsche Warenzeichen“, which marks goods made to Porsches specifications.
https://de.wikipedia.org/wiki/Datei:Porsche_Warenzeichen.svg
And the rest of the numbers indicate the type of glass used, any additives used, the visibility rating, part # of the glass, batch #, etc.
There’s more info in those numbers that’s tricky to decipher, especially inverted.
The other 2 round symbols are certifications I don’t know off the top of my head.
If you have Google Lens on your phone, point it at the symbols for a quick answer.
Other two round symbols are for European and Chinese certification.
