Circles and wavy lines in plastic on Mavic Pro

[SXViper03]

I crashed my MP 13 days ago and received my new replacement from DJI yesterday. I noticed while looking at the top of the MP near the front at a certain angle I could see circles and wavy lines in the plastic which I never noticed on my old MP.
Does anyone else have these on their MP's? (see pic). Just wondering if this is normal...

 

[Congoblue]

Looks like markings from bubble wrap...

 

[UAVNV]

maybe had a skin on it before and sun/environment baked it in?

 

[SXViper03]

maybe had a skin on it before and sun/environment baked it in?

I would think that was possible if this was a refurb but it's brand new.

 

[Pedro]

It's the plastic moulding.. Have you tried cleaning it, with an alcohol wipe?