This is a method of painting by which electrically charged powder paint is applied via a high voltage low ampere power unit to a grounded work piece i.e. alloy wheel. Electrostatic attraction holds the powder onto the coated part. The coated part is then heated in an industrial oven at 200 degrees which then melts/fuses the powder onto the alloy wheel. This results in a very durable, scratch resistant high gloss finish, which is 3 times stronger than solvent based wet paints. Unlike wet paints it contains no solvents and is therefore very environmentally friendly.

Some more information on this page about alloy wheel refurbishment.