It is sold in nearby labor insurance shops or labor insurance offices, as well as nearby pharmacies and labor insurance stationery stores. It is recommended to choose products with slow rebound speed, good air permeability, comfort and good sound insulation effect, which will not cause any harm to the skin and the inner contour of the ear canal. Its greatest advantage is that it is comfortable and suitable for sleeping.

For example, foam anti-noise earplugs are widely used, which are recognized as more comfortable and have better sound insulation effect; There are many brands and models of earplugs.

Www.dehsm.com/category-125.html, an anti-noise earplug, is mostly made of silica gel or low-pressure foam and high-elastic polyester. After being inserted into the ear canal, it is in close contact with the external auditory canal, so as to isolate the sound from entering the middle ear and the inner ear (eardrum) and achieve the purpose of sound insulation, thus enabling people to have a quiet rest or working environment.