What is difference between 9H and 10H ceramic coating?
?10H HIGH GLOSS FINEST?: New formula with over 88% pure SiO2 content. Compared with other 9H coating, this updated version coating hardness increases to 10H so that it lasts longer and works better on protecting your car paint.Besides, what is 9H and 10H ceramic coating?The most (miss)used term in t...