How to use protective glasses

1 believe we all know that no matter what you buy, if you don’t use it properly, it will be damaged after a period of time, especially protective glasses. 1f we don’t pay attention in the process of using, it is easy to cause some damage to our eyes. So, how to use protective glasses correctly

1. Placement method: if the glasses are placed temporarily, please put the convex side of the glasses upward. 1f the convex side of the glasses is placed downward, the lenses will be worn

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