I love ever TC product I’ve tried. However The ceramic nano coatings could be a little better in my opinion. I can only sell them as a one year coating based on all my real world durability testing. That’s in harsh Michigan weather. Maybe it lasts longer in other climates IDK. Guys get your quarts Nano coatings beefed up with more solids, a better carrier delivery system and you guys will be unstoppable when you add in all the other great TC chemicals.