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Glass Screen Protectors Have Become Main Stream. Installing glass screen protectors for our mobile phone has become a solid choice, and if you are considering traditional plastic ones, you must be outdated.
Glass protectors were invented long ago, but their 0.7mm thickness and weight are what keep them from customers. But nowadays, with the development of technology, protectors now are of the same harness but are much thinner and lighter than before. What’s more, they enable sensitive to touch and smooth finger moves, thus becoming a solid choice.
Have you also noticed that there will be a 9H logo on the packaging of each glass screen protector. But what does this 9H mean? And what does it stand for?
The 9H hardness glass film is not the 9H in the Mohs hardness, but the 9H hardness of the pencil. The hardness standard of the film is expressed by H (hardness), B = BLACK (blackness), H = HARD (hardness). The more the B number, the darker and softer the pencil is. The more the H number, the harder the color is. Pencil hardness rank order: 10B, 9B, 8B, 7B, 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H, 4H, 5H, 6H, 7H, 8H, 9H, 10H, 10B The softest and the ink is the deepest, H is harder and the ink is lighter, and the hardest ink of 10H is the lightest.
The 9H of the tempered glass screen protector indicates 9H scratch resistance and has a property of not breaking. The most feared of the mobile phone screen is scratched, which is the main reason for everyone's mobile phone screen protector. Each material has its hardness, and the material with low hardness is easily ground or cut by a high-hardness material. If the hardness of the material used to make the screen of the mobile phone can reach the top level, then it can be prevented from being scratched by any object.
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