I'm not sure I understand what they mean. If they're baking the rims, applying 100,000 Volts and powdering them, then bake curing the powder into a coating, it's a powder coat which is of course a type of polymer. If you want a gloss layer, there is clear powder coat that is applied the same way, over the base powder coats. Either way, the product is the same, a hard paint coating that's applied as a powder and cured at 400-450° to make it flow and cross link. I'd still use a paint coating instead of DLUX.