1. When using various earplugs, first pull up the auricles to make the cavities flat, and then hold the earbud handles and gently push the earplug cap body parts into the external ear canal, but do not use too much force or Insert too deeply.

2. If you feel bad sound insulation, you can slowly turn the earbuds to the best effect position. If the effect is still poor after repeated adjustments, earplugs of other models should be considered.

3. When wearing foam earplugs, the cylinder should be twisted into a cone and inserted into the ear canal to allow the plug body to rebound and fill the ear canal.

4. When wearing silicone rubber self-molding earplugs, you should distinguish between the left and right; when you put the ear canal, you want to rotate the earplug, put the positive position.

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