CCC seems to be a certification required for China. What is CCC - MPR China Certification

And the E9 is an approval stamp for what country signed the certification for the headlight (apparently): HELLA headlamp codes. Decoding the combinations

If you want to go deep on the rest of it, looks like https://unece.org/DAM/trans/doc/2009/wp29/DETA-06-03e.pdf might have a lot of the answers.

 

There should also be a DOT stamp somewhere indicating that the lamps have been approved for use on US roads (since you're in the US, according to the flag by your name).

 

Wasn't this on the center bit - basically the grill? If so, I'm not sure DoT care so it might not have a DoT stamp...

 

With a bit of 320, 600, 1000, 2000, and 3000 grit wet sanding it took me all of 15 minutes to remove those ungainly codes. Obviously this is likely verboten in the EU, but I seriously doubt anyone here in the USA will care. YMMV.

 

The marks matter for the manufacturing process as there are probably regulations that are enforced in various countries to verify the light that emitted does not interfere with on coming drivers. The CCC mark for example is required in China to verify the assembly is made from safety approved material similar to a U.S. UL Recognition Mark. The marks are required for the factory to pass their annual or semi annual audits.

Similar marks are on all the glass on the car as well. The glass marks are way more noticeable than the marks on the front light strip in my opinion. I assume you removed the warning label from the drivers door window as well.