Noise illustrations reproduce a day that is accompanied by noise every day. When the sound exceeds 75dB, the human body will feel uncomfortable; If it exceeds 100dB, it will cause hearing damage in the inner ear; Exceeding 120dB will cause permanent hearing loss.
The health risks brought by noise pollution to human body can not be ignored, ranging from impatience and irritability to physical illness and even permanent deafness. Hearing protection is urgent!
Earmuffs and earplugs are mainly used for noise reduction in the market. Earplugs are generally suitable for noise environment below115db. There are two kinds of plastic and non-plastic earplugs. Plastic earplugs are made of wax-impregnated cotton yarn, soundproof glass wool, plasticine and other materials. Non-plastic earplugs, also known as "universal earplugs", are made of plastic, rubber and other materials, and there are many specifications and different sizes.
Rexwell noise-reducing earplugs
The noise attenuation of earmuffs can reach 10 ~ 40 decibels, which is suitable for noisy environments such as factories, workshops and airports. Earplugs and earmuffs can be used alone or in combination, which can improve noise attenuation by 5 ~ 15 dB.