Hold your horses guys, and back up to the plate!
Powder coating - usually a polyester or polyurethane powder sprayed over the metal and baked @ 100~120 degrees, which turns it from a powder to a liquid. If the substrate is prepared properly, it sticks like shit to a blanket. If not prepared properly, or high humidity/long time between blasting & coating, it will peel off in 12~18 months. 
Removing powder coating can be hard work - better off masking the areas you don't want removed with 100mile hour tape (gaffa tape) and getting it grit blasted. Green scotchbrite and Autosol...mmmmm......
Older alloys and metals have all sorts of crap built into them - you're better off going grit blast & prime/two-pack - curing temperture 60~80C within 24 hrs. Less leaching and edge-bleeding, but slightly more work as the alloys not painted are exposed = polishing every two weeks or so.
Sorry Quan, but Acetone is best used for cleaning your nails. I'm told n850trx uses it frequently. 
 
If you do use it, dip your your nails in Palmolive dishwashing liquid regularly, it will help strengthen them! 
 
It is still used, but more companies are going to other (synthetic) aromatics.
Microns = 1,000 mm. Not sure about metals, but typical paint coverage over a plastic part (eg, Holden SS side skirt). Primer; 5 microns, basecoat (colour) 20 microns, Clearcoat, 40 microns.
Total; 65 microns. Will last for years.
Time to go to bed I think.
 
			
			
									
									These are my principles and if you don't like them...... I have others.