Audi TT Mk1 Front bumper cover repair

I have a small crack in my 2004 Audi TT. It is hardly noticeable, but I am afraid it will grow if left untouched.

What kind of plastic is it made of and would any adhesive work well with this kind of plastic?

I know plastic welding would work better, but then I would have to paint it and I would like to not do this since the crack is not that visible.



Thanks!!