Do you know how to identify the quality of disposable ear plugs?
1:slow rebound effect is too flexible, anti-noise ear cold swelling when pressing the external auditory canal skin, can cause ear swelling, ear pain and other discomfort; too small elasticity can not be in close contact with the external auditory canal, the sound insulation effect is reduced, so you must observe the back of the ear The degree of impeachment, the longer the rebound time, the better the quality..
2:softness and softness directly affect the comfort level of earplugs.
3: The surface texture is somewhat sticky. It will stick to the skin of the ear canal when worn in the ear. Try to avoid buying it. A good way to identify is to stick the two ear-sets tightly together and separate them. See the time of their separation, the sooner the better.