The basic prerequisite for achieving good results is thorough preparation. After removing all old paints, loose materials, and oils, sand the surface and remove dust with a cloth.
Painted metal surfaces:
Use sandblasting or sanding to remove rust. Clean the surface from dust. Prime with the AQUARUST primer, 1-2 coats.
New metal surfaces:
Degrease the surface using Thinner 135. Prime with the AQUARUST primer, 1-2 coats.