This brand is a special PU sponge elastic earplug, which imitates the shape of a bullet. Its main function is to improve people's sleep and protect their hearing. Many students and factory front-line workers will choose it as a good helper to concentrate in the bustling urban areas. Its characteristic is that it can effectively reduce the environmental noise by 70-80%, but the alarm clock and other sounds are still retained. A man who never delays his work is a good man.
Second, stereotyped writing
This brand of earplugs is small in design and characterized by low-pressure foaming, which is suitable for people to wear for a long time. For the elderly who use it, the T-shaped structural design makes it more convenient and fast to wear. But it must be said that it is also a famous "throwing sky" anti-noise earplug abroad.
Third, North
North's antibacterial earplugs are the first earplugs in the world to add antibacterial ingredients to earplugs. They pay as much attention to health as professional earplugs in hospitals, which can effectively prevent symptoms such as ear canal inflammation caused by bacteria. Nevertheless, its material still belongs to the derivative of PVC.
Fourth, Shenzhou 5.
Shenzhou 5, as its name implies, is a special anti-noise product specially developed for astronauts by China Astronaut Research and Training Center in China. It was patented as early as last century, and now it has entered the homes of ordinary people. People can decompress when flying and be waterproof when swimming and diving.
Five, the United States noise reduction king
The name that sounds so domineering is actually produced by MACK, the top American ear care manufacturer. You know, the American noise reduction king belongs to the flagship product of this factory in the United States and is loved by many people. Its biggest feature is that its noise reduction standard is much higher than the international noise reduction standard, up to 47.2 decibels!