A credible product evaluation uses defined samples, measured baselines and repeatable exposure rather than informal dirt, sun and scratch demonstrations.

Coatings can improve contamination release, UV resistance and gloss retention, but they are not stone-chip film and are not “as hard as diamond” in practical use.

Partial coating is possible where the product and visual transition permit it. The entire clear coat is not simply one hair-thick outer layer.

In-house development and written certificates require current technical documentation and precise terms. AVP recommendations should be judged by that evidence and the preparation process.