1. thickness. there are 0.2mm, 0.26mm, 0.3mm, 0.33mm, 0.4mm tempered glass in the market. the thinner, the more expensive, the better.
2. transparency. high transparency( up to 99%) is the best tempered glass screen protector. usually, the normal one is 95%-98%.
3. hardness. there are 8H-9H tempered glass screen protector. 9H hardness tempered glass is the best, it can protect your screen preventing scratch by sharp item, such as knives and nail, etc.
4. anti fingerprint and anti oil. usually, normal tempered glass screen protector have little function anti fingerprint or anti oil. the best quality one can keep your screen clean and comfortable.
5.adhesion. the better tempered glass is with good adhesion, it is easy to adhere on the screen. just put the tempered glass screen protector, then press the center of temepred glass, it absorbe on the screen automaticly. however, the bad tempered glass can't make it.
more info,pls link to: weaccessory.com
Shenzhen Western Electronic Co., Ltd