Can Mohs 6H prevent keys from being scratched? Which is harder, 9H or 9H?

A: Under normal circumstances, the Mohs 6H can resist minor scratches from daily keys, coins, etc. Common Mohs hardness of items: nails about 2.5, copper keys about 3, knives/blades about 5.5, keys (steel) about 4.5-5.5, quartz (sand) about 7. The Mohs 6H is higher than that of keys and knives, but lower than that of sand (quartz 7), so if the phone comes into contact with sand/dust, it may still get scratched. Regarding ";" 9H" Most of the tempered films on the market are labeled as" 9H" It is the hardness of a pencil, not the Mohs hardness. The standards for the two are completely different and the values cannot be directly compared. A 9H pencil is approximately equal to 4-5 on the Mohs scale, which is actually lower than 6H on the Mohs scale. Woowhead Guanfudun adopts Mohs 6H (self-tested by the brand laboratory), South Glass high alumina glass is strengthened three times, and is wear-resistant for 10,000 reciprocating times. It is clearly stated in the publicity that" The Mohs 6H can generally resist minor scratches from daily keys, coins, etc. Do not exaggerate the protective capabilities. The measured light transmittance by SGS is 96.5%.