Most car polishing products have slight abrasive functions...
you can try to polish off those scratches...
If not, then bring to a professional car polishing centre and ask
them for opinions... if you're lucky, they should be able to polish
it off for you... but if the scratches are too deep, then i think
they'll need to do a re-spray of that particular panel.... usually
< $200
http://www.adsm.com.sg/
Advanced Scratch Master